(完整版)三大从句习题

名词性从句练习题
1. _____ you have done might do harm to other people.
A. That
B. What
C. Which
D. This
2. They have no idea at all ____________ .
A. where he has gone
B. where did he go
C. which place he has gone
D. where he has bee n
3. _____________ l eaves the room last ought to turn off the lights.
A. Anyone
B. The person
C. Whoever
D. Who
4. Upon graduati on he asked to be sent to _____________ .
A. where he is most n eeded
B. where he n eeded
C. where he is mostly n eeded
D. where is he mostly n eeded
5. The early years of the D.U compa ny were characterized by a debate concerning ____ o r in dividual form should have more power.
A. whether the cooperati on form
B. either the cooperati on form
C. that cooperati on form
D.the cooperati on form
6. Can you make sure ____________ the gold ring?
A. where Alice had put
B. where had Alice put
C. where Alice has put
D. where has Alice put
7. No one can be sure ____________ in a millio n years.
A. what man will look like
B. what will man look like
C. man will look like what
D. what look will man like
8. _____________ t he Games will be held in Beiji ng is not known.
A. Whe never
B. If
C. Whether
D. That
9. It worried her a bit ____________ h er hair was tur ning grey.
A. which
B. that
C. if
D. for
10. ____________ y ou don't like him is none of my bus in ess.
A. What
B. Who
C. That
D. Whether
11. ____________ h e said at the meeti ng ast oni shed everybody prese nt.
A. What
B. That
C. The fact
D. The matter
12. He asked ____________ for the violi n.
A. did I pay how much
B. I paid how much
C. how much did I pay
D. how much I paid
13. —Do you remember __________ he came?
—Yes, I do, he came by car.
A. how
B. when
C. that
D. if
14. __________ is a fact that English is accepted as an international language.
A. There
B. This
C. That
D. It
15. Sarah hopes to become a friend of ___________ shares her interests.
A. anyone
B. whomever
C. whoever
D. no matter who
16. __________ we can't get seems better than ___________ we have.
A. What; what
B. What; that
C. That; that
D. That; what
17. ___________ we'll go camping tomorrow depends on the weather.
A. If
B. Whether
C. That
D. Where
18. It is generally considered unwise to give a child ___________ he or she wants.
A. however
B. whatever
C. whichever
D. whenever
19. _________ caused the accident is still a complete mystery.
A. What
B. That
C. How
D. Where
20. It was a matter of _________ would take the position.
A. who
B. whoever
C. whom
D. whomever
21. —I drove to Zhuhai for the air show last week.
—Is that ____________ you had a few days off?
A. why
B. when
C. what
D. where
22. _________ has helped to save the drowning girl is worth praising.
A. Who
B. The one
C. Anyone
D. Whoever
23. These wild flowers are so special I would do ____________ I can to save them.
A. that
B. which
C. whichever
D. whatever
24. _________ she couldn't understand was _________ fewer and fewer students showed interest in her lessons.
A. That; what
B. What; why
C. What; because
D. Why; that
25. What the doctors really doubt is ___________ my mother will recover from the serious disease soon.
A. when
B. how
C. whether
D. why
26. __________ is no possibility _________ Bob can win the first prize in the match.
A. There; that
B. It; that
C. There; whether
D. It; whether
27. It is obvious ______ on more importa nt thi ngs.
A. which the money should we spe nd
B. what the money should we spe nd
C. that we should spe nd the money
D. that the money should we spe nd
28. There is a new problem in volved in the popularity of private cars _________ road con diti ons n eed ________
A. that; to be improved
B. which; to be improved
C. where; improvi ng
D. whe n; improv ing
29. —Are you still thinking about yesterday's game?
—Oh, that's _____________ .
A. what makes me feel excited
B. whatever I feel excited about
C. how I feel about it
D. whe n I feel excited
30. We cannot figure out ______ quite a nu mber of in sects, birds, and ani mals are dying out.
A. that
B. as
C. why
D. whe n
31. ________ every magnet is surro un ded by a magn etic field.
A. It believes that
B. It believed that
C. It is believed that
D. It is believi ng that
32. You can take _____ room you prefer as your rest room of our n egotiati on meeti ng.
A. to what
B. whichever
C. that
D. whose
33. Pare nts are taught to un dersta nd ____ importa nt educatio n is to their childre n's future.
A. that
B. how
C. such
D. so
34. The road is covered with sno w. I can't un dersta nd ___ they in sist on going by motor-bike.
A. why
B. whether
C. whe n
D. how
35. After Yang Li Wei succeeded in circli ng the earth, _____ our astr on auts desire to do is walk in space.
A. where
B. what
C. that
D. how
36. A story goes ______ Elizabeth I of En gla nd liked nothing more that being surro un ded by clever and qualified
no bleme n at court.
A. whe n
B. where
C. what
D. that
37. He asked me _____ I inten ded to do after my resig nati on.
A. that what
B. what
C. which
D. that
38. Alo ng with the letter was his promise ______ he would visit me this coming Christmas.
A. which
B. that
C. what
D. whether
39. Mary wrote an article on _______ the team had failed to win the game .
A. why
B. what
C. who
D. that
40. Bandy left word with my secretary ___________ he would call aga in in the after noon.
A. who
B. that
C. as
D. which
41. The way he did it was different ________ we were used to .
A. i n which
B. in what
C. from what
D. from which
42. Accord ing to some big compa ny, the goal of staff training is to help staffs lear n what ______ to know to live a
well-adjusted and successful life in the compa ny.
A. do they n eed
B. they n eed
C. they are n eeded
D.as they may n eed
43. With his work completed, the bus in essma n stepped back to his seat, feeli ng pleased __ he was a man of acti on.
A. which
B. that
C. what
D. whether
44. We have n't settled the questi on of ________ it is n ecessary for him to study abroad.
A. if
B. where
C. whether
D. that
45. ______ makes this shop different is that it offers more personal services.
A. What
B. Who
C. Whatever
D. Whoever
46. See the flags on top of the building? That was ________ we did this morning.
A. whe n
B. which
C. where
D. what
47. Please remi nd me _______ he said he was goin g. I may be in time to see him off.
A. where
B. whe n
C. how
D. what
48. --- What did your pare nts think about your decisi on?
---They always let me do _______ I thi nk I should.
A. whe n
B. that
C. how
D. what
49. Engines are to mach ines _______ hearts are to ani mals.
A. as
B. that
C. what
D. which
50. I just won der _________ that makes him so excited.
A. why it does
B. what he does
C. how it is
D. what it is
51. One adva ntage of play ing the guitar is ______ it can give you a great deal of pleasure.
A. how
B. why
C. that
D. whe n
52. He spoke proudly of his part in the game, without men ti oning ______ his teammates had done.
A. what
B. which
C. why
D. while
53. --- It's thirty years since we last met.
---But I still remember the story, believe it or not, __________ we got lost on a rainy ni ght.
A. which
B. that
C. what
D. whe n
54. There is much chanee Bill will recover from his injury in time for the race.
A. What
B. Why
C. Where
D. Which
55. Nobody believed his reason for being absent form the class ____ he had to meet his uncle at the airport.
56. These shoes look very good. I won der _________. A. how much cost they are B. how much do they cost C. how much they cost
D. how much are they cost
57. Doris' success lies in the fact _________ she is co-operative and eager to learn from others. A. which
B. that
C. whe n
D. why
58. --- Could you do me a favor?
---It depends on _____ it is. A. which
B. whichever
C. what
D. whatever
59. After the accident, I opened my eyes slowly and realized ______ I was still alive.
60. I doubt ______ it is true.
61. Choos ing the right dicti onary depe nds on ____ you want to use it for.
A. what
B. why
C. how
D. whether
62. _____ parents say and do has a life-long effect on their children.
A.That
B.Which
C.What
D.As
63. _______ that as both birds and mammals become larger, their metabolic rates per unit of tissue decrease, and they gen erally live Ion ger.
A. The truth
B. It is true
C. If true
D. To be true
64. His success was due to ________ he had been working hard .
A. that
B. the fact which
C. the fact that
65. You can only be sure of __ you have at prese nt; you cannot be sure of someth ing ___ you might get in the future..
A. that; what
B. what; /
C. which; that
D. /; that
66.It is none of your bus in ess ________ other people thi nk about you. Believe yourself. A. how
B. what
C. which
D. whe n
67.____ matters most in lear ning En glish is eno ugh practice.
A. that
B. which
C. un til
D. if
A. why
B. that
C. where
D.
becaus A. as B. which C. what
D. that
A. which
B. that
C. what
D. whether
D. the fact of
68. ____ was to return to our company.
A. That really interested him
B. What really interested him
C. Which really interested him
D. That interested him really
69. The traditional view is ____ we sleep because our brain is “programmed ”to make us do so.
A. when
B. why
C. whether
D. that
70. Why not try your luck downtown, Bob? That's ____ the best jobs are.
A. where
B. what
C. when
D. why
答案
1 ------5 BACAA 6 --- ---10 CACBC 11
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---15 ADADC
16 --- —20 ABBAA
21
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---25 ADDBC
26
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---30 ACAAC
31 --- ---35 CBBAB
36
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---40 DBBAB
41
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---45 CBBCA
46 --- ---50 DBDCD
51
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---55 CABAB
56
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---60
CBCD
D
61---- ---65 ACACB
66
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--70 BABDA
形容词性从句练习
1. Mary lives in the room, the door _____ o pe ns east.
A. of it
B. of which
C. of that
D. whose
2. The engineer ____ my father is talking has just come from abroad.
A. with whom
B. with who
C. with which
D. that
3. He lives in a hotel, ____ is only five minu tes' walk from here.
A. that
B. which
C. in which
D. where
4. Is there anything ___ I can do for you?
A. which
B. who
C. as
D. that
5. The speaker will tell us about some writers and their works ___ are known to us.
A. which
B. that
C. as
D. who
6. This is the reason ___ they are all against the plan.
A. which
B. that
C. why
D. what
7. It was not until late in the evening ____ the traveler found a hotel.
A. which
B. that
C. as
D. where
8. I didn't like the way ___ she spoke to me.
A. which
B. that
C. how
D. as
9. This is ___ I can do for you right now.
A. which
B. that
C. what
D. as
10. It was at our college library ____ I borrowed the novel.
A. which
B. in which
C. that
D. where
11. I have seen trees, ___ open at sunrise and close at sunset.
A. which the leaves
B. of which the leaves
C. whose leaves
D. its leaves
12. All ___ is needed is a supply of oil.
A. the thing
B. that
C. what
D. which
13. The foreign guests, ____ were scientists, were warmly welcomed at the airport.
A. most of whom
B.most of them
C. most of which
D. most of those
14. I can still remember the sitting-room __ my mother and I used to sit in the evening.
A. what
B. which
C. that
D. where
15. On the train I saw a student ___ I thought was your sister.
A. who
B. whom
C. which
D. that
16. Is the river ____ through the town very long?
A. flows
B. that flows
C. which flow
D. the one flows
17. Is this college ____ they went to last year?
A. that
B. which
C. the one
D. the one what
18. Is this the university ___ you visited last time?
A. that one
B. which
C. the one
D. the one what
19. It is the factory ___ his father worked a few years ago.
A. that
B. which
C. where
D. what
20. It is the factory ___ his father wanted to go to.
A. that
B. the one
C. where
D. what
21. Egypt is a country ___ is famous for its pyramids.
A. where
B. which
C. in which
D. at which
22. China is the country ___ he spent the best part of his life.
A. where
B. which
C. in that
D. at which
23. A small car arrived, ____ came a man, a woman and five children of different ages.
A. out of that
B. out of it
C. out of which
D. whose car
24. Can you suggest a time ___ it will be convenient to meet?
A. that
B. which
C. when
D. in which
25. I'd like to tell you ____ I saw in the exhibition.
A. which
B. that
C. what
D. /
26. Have you got anything ____ belongs to me?
A. which
B. that
C. of which
D. what
27. I hope that the little ____ I have been able to do has been of some use.
A. which
B. that
C. what
D. for which
28. Who _____ has common sense will do such a thing?
A. which
B. that C .whose D. whom
29 The bike and its rider ___ had knocked down the boy were taken to the police.
A. who B .that C. which D. whom
30. My uncle had three sons, two of ___ died during the last earthquake.
A. them B .which C. whom D. that
31. Put the letter _____ he can find it easily.
A. in which
B. at which
C. where
D. which
32. There is little time ___ we can spare.
A. which
B. that
C. as
D. what
33. Everything _____ he said was of great importance.
A. which
B. that
C. as
D. what
34..This is one of the presents _____ he gave me.
A. which
B. that
C. as
D. what
35. This is the very letter __ I am looking for .
A. which
B. that
C. as
D. what
36. Tom didn't attend the meeting, ______ we expected.
A. where
B. that
C. as
D. what
37. I will give you such information ______ will help you.
A. which
B. that
C. as
D. what
38. She wears the same kind of clothes _____ her sister does.
A. which
B. what
C. that
D. as
39. I have never seen such a clever boy ____ you.
A. which
B. that
C. as
D. what
40. Do you know the reason _____ he was late?
A. that
B. which
C. what
D. for which
41 . ____ the teacher has announced, school will be opened tomorrow.
A. Once
B. Because
C. As
D. Since
42. The size of the audience, __ we had expected, was well over twenty thousand.
A. as
B. which
C. what
D. because
43. This is the best hotel in the city ___ I know.
A. which
B. that
C. where
D. it
44. The only problem ____ troubled him has not been solved.
A. which
B. that
C. as
D. what
45. You can take any books _____ you like.
A. which
B. that
C. as
D. what
46. This is the best novel _____ I have ever read.
A. which
B. what
C. as
D. that
47. This is the first play ___ I have seen since I came here.
A. which
B. that
C. as
D. what
48. The lady ___ is a woman scientist.
A.whom you spoke
B. with which you spoke
C.whom you said to
D.you spoke to
49. The way ___ you are doing it is completely crazy.
A. that
B. which
C. as
D. what
50. His parents wouldn't let him marry anyone _____ family was poor.
A .of whom B. whom C. of whose D. whose
51. He paid the boy $10 for washing ten windows, most of ___ hadn't been cleaned for at least a year.
A. these
B. those
C. that
D. which
52. This is the third week ___ the dustmen haven't come for the rubbish.
A. that
B. when
C. which
D. on which
53. Is it that museum ______ they'd like to visit during their trip to Japan?
A. that
B. which
C. where
D. as
54. He is the only one of the students _______ the truth.
A. who know
B. who knows
C. that know
D. who are knowing
55. Did they find they went back ______ ?
A. where had they been
B. where were they
C. where they had been
D. where they were
56. To get the job started, _____ I need is your permission.
A. only what
B. all what
C. all that
D. only that
57. The policemen were sure that the murderer was the man ___ gun was found lying beside the dead body .
A. who had
B. whose
C. which
D. of whom a
58. Nearly all the food ____ comes from animals and plants.
A. that eat
B. is eaten
C. we eat
D. that eats
59. Has all __ can be done _____ ?
A. what, done
B. that, been done
C. that, be done
D. what, already done
60. It began to rain, ______ was exactly what we wanted.
A. that
B. what
C. which
D. it
61. More and more young people like playing football, _____ is an exciting game.
A. what
B. which
C. that
D. because
62. Wilma became the first American woman to win three Olympic gold medals in track, ___made her mother very proud.
A. it
B. that
C. which
D. this
63. I'm going to visit the factory ___ your brother worked a few years ago.
A. that
B. where
C. which
D. what
64. We are going to visit the school ___ you went to last time.
A. which
B. where C .in which D. what
65. The days _____ we worked together cannot be easily forgotten.
A. that
B. when
C. which
D. at which
66. These days ___ we spent together cannot be easily forgotten.
A. that
B. when
C. on which
D. at which
67. The buses, ___ were already full, were surrounded by an angry crowd.
A. most of them
B. most of that
C. most of which
D. that
68. My father bought me several books, but ____ was interesting.
A. most of them
B. none of them
C. none of which
D. neither of which
69. China has thousands of islands, _____ the largest is Taiwan.
A. which
B. in which
C. that
D. of which
70. Do you understand the theory ____ ?
A. that how the living things came into being
B. how did the living things come into being
C. of how the living things come into being
D. of how did the living things come into being
71. They are flying to Hong Kong, ____ they plan to visit for two or three days.
A. where
B. when
C. that
D. which
72. Great changes have taken place in the small town, ____ the famous writer spent his childhood.
A. where
B. when
C. that
D. in the town
73. Can you suggest a time ______ we can meet?
A. which
B. when
C. where
D. how
74. That's the very point ____ .
A. that must be insisted
B. which must be insisted
C. that must be insisted on
D. which must be insisted upon
75. “ Thirty-nine Steps ” is one of the most exciting films _ directed by Alfred Hotchcock.
A. which was
B. that was
C. that were
D. which were
76. That's the only furniture ___ we have.
A. that
B. what
C. which
D. all
77. All of the plants now raised on farms have been developed from the plants ___ wild.
A. once they grew
B. they grew once
C. that once grew
D. once grew
78. The last place ___ the foreign friends visited was the Summer Palace.
A. what
B. which
C. that
D. in which
79. In the dark street, there wasn't a single person ___ she could turn for help.
A. that
B. who
C. from whom
D. to whom
80. Those ___ were not fit for their work could not see the beautiful clothes.
A. who
B. that
C. which
D. whose
81. Don't trust such men ___ praise you to your face.
A. as
B. who
C. that
D. which
82. I've bought the same kind of electric fan ____ you bought last time.
A. which
B. that
C./
D. as
83. The house is just the same ___ it used to be.
A. which
B. that
C. /
D. as
84. Mr. Smith isn't such a man ___ he used to be.
A. as
B. what
C. that
D. who
85. He must be from Shanghai, __ can be judged from his accent.
A. which
B. that
C. what
D. as
86. The young girl is not ___ she used to be a few years ago.
A. which
B. that
C. what
D. as
87. The children themselves were calm enough; ___ the parents that got into a panic.
A. in spite of
B. those were
C. it was
D. however
88. It was many years ago ___ I met her in London.
A. since
B. when
C. that
D. which
89. It is many years ___ we met last in London.
A. since
B. when
C. that
D. which
90. He's from Shanghai, ___ population is the largest of all cities in China.
A. whose
B. its
C. which
D. that
91. ___ is known to all, the earth is round.
A. It
B. As
C. That
D. Which
92. Such signs ___ we use in the book ____ Greek letters.
A. as, is
B. which, are
C. as, are
D. which, is
93. She'll be on the same train ___ I am on today.
A. as
B. like
C. with
D. that
94. When people talk about the cities of US, the first ___ comes into mind is New York.
A. city
B. of them
C. one
D. that
95. Is there anyone in your class ___ family is in the city?
A. which
B. whose
C. what
D. who
96. There are 30 books on the desk, two ___ are novels.
A. of them
B. of that
C. of which
D. of whom
97. He hasn't got enough money with ____ he can buy the computer.
A. that
B. which
C. it
D. whom
98. Winter is the time of year ___ the days are short and nights are long.
A. that
B. which
C. when
D. whose
99. Do you know the reason __ she got so angry yesterday?
A. which
B. in which
C. that
D. why
100. Football, ___ is a very interesting game, is played all over the world.
A. that
B. which
C. it
D. who
1-5 BABDB 6-10 CBBCD 11-15 CBADA 16-20 BCBCA
26-30 BBBBC 31-35 CBBBB 36-40 CBDCD
21-25
BACCC
41-45
46-50 DBDAD 51-55 DAABC 56-60 CBCBC
CABBB
61-65
66-70 ACBDC 71-75 DABCC 76-80 ACCDA
BCBAB
81-85
ADDAA 86-90 CCCAA 91-95 BCADB 96-100 CBCDB
副词性从句习题
1. I won't call you, ______ something unexpected happens.
A. unless
B. whether
C. because
D. while
2. We all know that, ________ , the situation will get worse.
A. not if dealt carefully with
B. if not carefully dealt with
C. if dealt not carefully with
D. not if carefully dealt with
3. ______ he had not hurt his leg, John would have won the race.
A. If
B. Since
C. Though
D. When
4. Pop music is such an important part of society ____ it has even influenced our language.
A. as
B. that
C. which
D. where
5. Small sailboats can easily turn over in the water _____ they are not man aged carefully.
A. though
B. before
C. un til
D. if
6. ______ I really don't like art, I find his work impressive.
A.As
B.Si nee
C.lf
D.While
7. The field research will take Joa n and Paul about five mon ths; it will be a long time ___ w e meet them aga in.
A. after
B. before
C. since
D. whe n
8. Leave your key with a n eighbor _____ y ou lock yourself out one day.
A. ever si nee
B. even if
C. soon after
D. i n case
9. Tim is in good shape physically ______ h e does n't get much exercise.
A. if
B. even though
C. uni ess
D. as long as
10. You will be successful in the in terview ____ you have con fide nee.
A. before
B. once
C. Un til
D. though
11. _____ you may have, you should gather your courage to face the challe nge.
A. However a serious problem
B. What a serious problem
C. However serious a problem
D. What serious a problem
12. He was told that it would be at least three more mon ths _______ he could recover and return to work.
A. whe n
B. before
C. since
D. that
13. ____ there is a snowstorm or some other bad weather, the mail always comes on time.
A.Because
B.lf
C.When
D.Un less
14. ______ tomorrow, our ship will set sail for Macao.
A.However the weather is like
B.However is the weather like
C.Whatever is the weather like
D.Whatever the weather is like
15. _____ our man ager objects to Tom's joining the club, we shall accept him as a member.
A. Un til
B. Un less C If D. After
16. Many of them turned a deaf ear to his advice, ______ they knew it to be valuable.
A. as if
B. now that
C. eve n though
D. so that
17. My parents live in a small village. They always keep candles in the house ____ there is a power out.
A. if
B. uni ess
C. in case
D. so that
18. We had to wait half an hour ____ we had already booked a table.
A. since
B. although
C. un til
D. before
19. --- Where's that report? --- I brought it to you ______ you were in Mr. Black's office yesterday.
A. if
B. when
C. because
D. before
20. --- Have you got any idea for the summer vacation?
--- I don't mind where we go ______ there's sun, sea and beach.
A. as if
B. as long as
C. now that
D. in order that
21--- Do you have a minute? I've got something to tell you.
--- Ok, ____ you make it short.
A. now that
B. if only
C. so long as
D. every time
22. Nancy enjoyed herself so much ___ she visited her friends in Sydney last year.
A. that
B. which
C. when
D. where
23. John thinks it won't be long ___ he is ready for his new job.
A. when
B. after
C. before
D. since
24. He found it increasingly difficult to read, ____ his eyesight was beginning to fail.
A. though
B. for
C. but
D. so
25. You'd better not leave the medicine ____ kids can get it.
A. even if
B. which
C. where
D. so that
26. ____ hungry I am, I never seem to be able to finish off this loaf of bread.
A. Whatever
B. Whenever
C. Wherever
D. However
27. I used to love that film _____ I was a child, but I don't feel it that way any more.
A. once
B. when
C. since
D. although
28. A small car is big enough for a family of three ___ you need more space for baggage.
A. once
B. because
C. if
D. unless
29. There were some chairs left over ___ everyone had sat down.
A. when
B. until
C. that
D. where
30. Don't promise anything ____ you are one hundred percent sure.
A. whether
B. after
C. how
D. unless
31. —Did you return Fred's call? —I didn't need to ______ I'll see him tomorrow.
A. though
B. unless
C. when
D. because
32. I'm sorry you've been waiting so long, but it'll still be some time __ Brian get back.
A. before
B. since
C. till
D. after
33. We'll have a picnic in the park this Sunday ____ it rains or it's very cold.
34. --- Are you ready for Spain? ---Yes, I want the girls to experie nee that _____ they are young.
35. _____ well prepared you are, you still n eed a lot of luck in mountain climb ing.
A. However
B. Whatever
C. No matter
D. Although
36. She had just finished her homework _______ h er mother asked her to practice playing the piano yesterday.
A. whe n
B. while
C. after
D. since
37. My pare nts don't mind what job I do ____ I am happy.
A. even though
B. as soon as
C. as long as
D. as though
38. You can' t borrow books from the school library _____you get your stude nt card.
A. before
B. if
C. while
D. as
39. Peter was so excited _____ he received an in vitati on from his frie nd to visit Chongqing.
A. where
B. that
C. why
D. whe n
40. All the dishes in this menu, ____ otherwise stated, will serve two to three people.
A. as
B. if
C. though
D. unl ess
41. Because of the heavy traffic, it was already time for lunch break ______she got to her office.
A. since
B. that
C. whe n
D. until
42. The old man asked Lucy to move to ano ther chair ______ he wan ted to sit next to his wife.
A. although
B. unl ess
C. because
D. if
43. You may use room as you like ______ you clea n it up afterwards
A. so far as
B. so long as
C. in case
D. even if
44. Mary made coffee _______ her guests were fin ishi ng their meal.
A. so that B although C. while D. as if
45. The little boy won't go to sleep ____ his mother tells him a story.
A. or
B. unl ess
C. but
D. whether
46. Tom was about to close the windows ___ his atte nti on was caught by a bird.
47. The engin eer are so busy that they have zero time for outdoor sports activities, ______ t hey have the in terest. 48. --- Our holiday cost a lot of money.--- Did it?
A. since
B. if
C. uni ess
D. un
til
A. while
B. un til
C. if
D. before
A. whe n
B. if
C. and
D. till
A. wherev
B. Whe never
C. even if
D. as if。