单选

Unit1 并列句及常见的并列连词（and, or, but, so）( ) 1. My aunt asks if I like a woolen sweater ______ a cotton one. A. but B. or C. and( ) 2. Either Mary ______ Lucy told him to come to see us.A. orB. andC. with( ) 3. Hurry up, ______ we'll be late for the film.A. andB. butC. or( ) 4. We ran to the trees, _____ we couldn't see any more monkeys.A. butB. soC. and( ) 5. Charlie took the job,_______ he did it very well.A. soB. yetC. and( ) 6.Think it over_________ you will find a way.A. orB. soC. and( ) 7.You aren't listening,_________ I'll shut up.A. butB. whenC. so( ) 8.The front door was locked,_________ I went round to the back door.A. soB. butC. or( ) 9.There is air all around us, we can't see it.A. soB. forC. but( ) 10. --- It’s a long story, but you can’t find new words in it.---Good! _____it will be too hard for children.A. SoB. AndC. But( ) 11. Mr. Smith is an English teacher ______ he teaches us English. A. or B. and C. but( ) 12. — Would you like to go to the concert with me tonight?—I’d love to, ______ I can’t. I have a lot of homework to do.A. orB. andC. but( ) 13. When you are learning English, use it as often as possible, _____ you might forget it.A. orB. andC. but( ) 14. —You watched the fashion show last night, didn’t you?— Yes, ______ I missed the beginning.A. orB. andC. but( ) 15. It’s a long story, but there are few new words in it, ____ it will be easy for children.A. orB. andC. so( ) 16. The doctor tried his best to save the patient’s life,_____ failed.A. orB. andC. but( ) 17. Remember to return the books to the library on time, ____you will be fined (罚款).A. orB. andC. but( ) 18. The blouse made of silk in the store is too dear,____ the poor child can’t afford （买得起）it.A. orB. whileC. but( ) 19. Do you like to have Chinese food ______ western food?A. orB. andC. but( ) 20. I like both swimming ______ skating. They are so cool!A. orB. andC. but( ) 21. Most students can’t sing ______ dance, because they are too busy studying.A. butB. andC. or( ) 22. We bought Granny a present，_______ she didn't like it．A．but B．and C．when( ) 23．That was our first lesson，_______ she didn't know all our names．A．for B．but C．so( ) 24．The boy is only ten，_______ he can do some washing himself．A．so B．but C．or( ) 25．He is rich，_______ he isn't happy．A．or B．so C．but( )26．Zhang felt very tired，_______ he needed a good rest．A．and B．so C．or( ) 27．—Have you got any brothers _______ sisters？—I have a sister．A．so B．or C．but( ) 28．Jim is an American，_______ he can speak very good Chinese．A．and B．so C．but( ) 29. Be quick, ______ we'll be late.A. andB. orC. so( ) 30. These questions are very easy. _______ nobody can work them out. It’s a pity(遗憾).A. ButB. orC. so1-5 BACAC 6-10 CCACC 11-15 BCACC 16-20 CACAB 21-25 CACBC 26-30 BBBBAUnit2 it作句子形式上的主语( ) 1. It is bad _______ with your mouth full of food when you have a meal with your friends.A. speakingB. speakC. to speak( ) 2. It’s interesting _______ out with your friends during holidays.A. for playingB. to playingC. to play( ) 3. Why not have a walk after supper? It is good ______ your health.A. toB. forC. at( ) 4. It takes me 30 minutes _______ to school by bike every day.A. goingB. to goC. goes( ) 5. I think _______ is important _________ let him ________ know the truth.A. it, to, /B. it, /, /C. this, to, /( ) 6. --_____ is really hard _____ them _____ Mount Huang.--We should learn from them and keep trying.A. This, to, climbingB. It, for, to climbC. It, to, climbing( ) 7. -- This is my homework. I’m sorry I didn’t finish it on time.-- Never mind. It’s better _____ than never.A. to lateB. to be lateC. be late( ) 8. It is a good habit _____ breakfast every day.A. hadB. to haveC. has( ) 9. It’s easy _____ the work _____ the help of my friend.A. to do, onB. of doing, withC. to do, with( ) 10. It’s ____ to take a plane than a trainA. quicklyB. more quicklyC. quicker( ) 11. It’s fun _____ a soccer match on TVA. of watchingB. to playC. to watch( ) 12. It’s _____ to wear so little on _____ a cold day.A. not wise, suchB. wise, suchC. not wise, so ( ) 13. It’s _____ to teach a man fishing than _____ him fish.A. better, to giveB. better, givingC. good, gives ( ) 14. It’s hard _____ what is the be st way to spend the summer.A. to say,B. sayingC. say( ) 15. – This English newspaper is very easy for the students because there are few new words in it.-- It’s _____ to read it.A. usefulB. usefullyC. use( ) 16. – Will you watch the World Cup match this year?-- Of course. It’s exciting _____ the World Cup. You know I’m a football fanA. watchB. watchedC. to watch( ) 17. It’s very nice _____ pictures for me.A. cutB. to cutC. cutting( ) 18. –I’m thinking about becoming a plane driver.-- It’s _____ a plane.A. excited to flyB. excited flyingC. exciting to fly ( ) 19. It is always more difficult _____ how to study by oneself than _____ some formulas(公式).A. to know, to rememberB. know, rememberC. to know, remembering( ) 20. – I think it is important _____ English.-- I think so.A. to learnB. for learnC. learning( ) 21. It is good _____ to eat more fruits.A. youB. for youC. at you( ) 22. It is necessary for us ______ careful when crossing the street.A. beingB. to beC. are( ) 23. It is bad for your eyes ____ TV the whole night.A. watchingB. to watchC. watches.( ) 24. Is it important _____ computer well?A. playB. playsC. to play( ) 25. It’s _____ to watch a soc cer game on the playground.A. excitedB. excitingC. excite( ) 26. I prefer to travel by train. It’s faster _____ a train than to take a bus.A. takeB. takingC. to take( ) 27. -- ______ the bike is good exercise.-- Yes, it’s good _____ our exercise.A. Riding, toB. To ride, forC. Ride, for( ) 28. I don’t think _____ necessary for you to worry too much abou t your son.A. those areB. that isC. it is( ) 29. – Do you like traveling by plane?-- No, I prefer trains to planes. I think it more expensive ____ by plane.A. to travelB. travelC. traveling( ) 30. – How about taking a bus?-- It’s ____ to take a bus than a train.A. more cheapB. cheaperC. cheap答案：1-5 CCBBA 6-10 BBBCC 11-15 CAAAA 16-20 CBCAA 21-25BBBCB 26-30 CBCABUnit3 被动语态：( ) 1. --- People say the subway ________ building in Harbin in a few years. --- Sounds _________. And it will take us less time to get to school.A. will finish; interestingB. is finished; interestedC. will be finished; interesting( ) 2. The young trees must ______.A．be taken good care B．look after well C．be taken good care of ( ) 3. --- I want to teach in this school.--- Well, teachers ____ very much here.A. needB. are needingC. are needed( ) 4. The brave girl’s story __________ in the newspaper.A. was reportedB. was reportingC. reports( ) 5. The flowers________ every day, or they’ll die.A. must be watered B can be watered C should water( ) 6. Last year, Li Hua, a college student,______ to work for the Olympic Games.A. is choosingB. is chosenC. was chosen( ) 7. --- Who’s the baby in the photo?--- It’s me. This photo ____ ten years ago.A. takesB. was takenC. took( ) 8. Maria _________ at 6:30 every morning by her mother to get ready for school.A. was woken upB. woke upC. is woken up( ) 9. More than two schools _______ in the city next year．A．are built B．were built C. will be built( ) 10. Don’t worry. You ______ a lot of time to finish the work.A. will giveB. have givenC. will be given( ) 11. Many people learn English because it _______ widely _______ in the world.A. is; usedB. was; usedC. is; using ( ) 12. Old people must ________.A. be spoken to politelyB. speak to politeC. be spoken politely( ) 13. ---Do you plant trees in spring?--- Yes. Many trees ____ in our city every year.A. are plantingB. are plantedC. were planted( ) 14. --- Alice, you _______ on the phone.--- I’m coming. ThanksA. wantB. are wantedC. are wanting( ) 15. --- Look at the sign on the right. --- Oh, parking ____ here.A. doesn’t allowB. isn’t allowedC. wasn’t allowed( ) 16. Now Chinese becomes a popular language that ____ widely ____in the world.A. is, learnedB. is, learningC. will, learn( ) 17. Things should____ here before you enter the museum.A. keepsB. keepC. be kept( ) 18. A new bridge will ______ across the river.A. be buildingB. be builtC. build( ) 19. --- But where are the books?--- Don’t worry. They ______ here on time.A. have sentB. will be sentC. are sending( ) 20. --- I know Mr. White is very angry with me. What does he say?--- He says you ______ away if you’re late ag ain.A. is foundedB. has been sentC. will be sent( ) 21. No one knows how the big rocks ______ and ______ without modern machines eighthundred years ago.A. are cut; movedB. were cut; moveC. were cut; moved( ) 22. We learn how to surf the Internet because it ______ widely ______ in the world.A. is; usedB. is; usingC. was; used( ) 23. A sports meeting______ successfully in our school last spring.A. heldB. was heldC. is held( ) 24. We are often told ______ at people who are in trouble.A. not to smileB. to smileC. not to laugh( ) 25. Mary ______ the song at a party.A. heard singB. was heard singingC. was heard to sing( ) 26. A new hospital ____ in my hometown last year.A. was builtB. builtC. is built( ) 27. --- I want to be a Chinese teacher when I grow up.--- That’s great. Chinese teachers ______ in China and some foreign countries.A. needB. are needingC. are needed( ) 28. --- Do you believe there are aliens(外星人)?--- I’m afraid not. I think aliens____ in space.A. can be foundB. can’t be foundC. can be founded( ) 29. --- What do you think of the owner of the shop?--- I don’t like her. The w orkers ______ lots of things by her.A. was made to doB. made doC. were made to do( ) 30. It is reported that the Underground Line No.3____ in our city in 2012.A. will buildB. will builtC. will be built答案：1-5 CCCAA 6-10 CBCCC 11-15 AABBB 16-20 ACBBC 21-25 CABAC 26-30 ACACCUnit 5-6宾语从句：( ) 1. Did you hear ______?A. what did I sayB. what I saidC. I said what( ) 2. Can you tell me ________?A. which class you are inB. which class are you inC. you are in which class( ) 3. ---Excuse me. Could you tell me _______? --- Certainly.A. how I can get to the stationB. I can get to which stationC. which station can I get to( ) 4. Could you tell me where _______ yesterday?A. did you goB. you wentC. you have gone( ) 5. Tom asked me ________.A. whose shirt was thisB. whose shirt this wasC. who shirt this was ( ) 6. Excuse me, could you tell me _______?A. where the post office isB. where’s the bus stationC. what’s she doing ( ) 7. I want to see Mrs. Wang, but I don’t know _______.A. she lives whereB. where does she liveC. where she lives( ) 8. --- Go and ask Mr. White for help.--- But I don’t know _______.A. where does he liveB. where he livesC. where is he living( ) 9. --- Can you tell me ______? --- Yes, he lives in a small town.A. where he livesB. what he saidC. when he will leave( ) 10. Have you decided ______ for London?A. when will you leaveB. when you will leaveC. when are you going ( ) 11. Excuse me. Could you tell me ______our tickets?A. where do we showB. where shall we showC. where we shall show ( ) 12. --- What are you interested in about cooking food?--- We are all interested in ______.A. how egg is friedB. how is egg friedC. how egg fries( ) 13. Do you know _______?A. what it isB. what is itC. who is he( ) 14. Do you know B ____?A. whose book is thisB. whose book this isC. this book is whose ( ) 15. I don’t know ______ now.A. where is my catB. my cat is whereC. where my cat is( ) 16. Does he know ______?A. what’s your nameB. what name is yoursC. what your name is ( ) 17. Do you know ______?A. which floor does he lives onB. which floor he lives onC. he lives on which floor( ) 18. Can you tell me where _______?A. is the hospitalB. the hospital isC. is hospital( ) 19. He hasn’t decided _______.A. if he’ll go on a trip to Wuxi or notB. whether will he go on a trip to Wuxi or notC. whether he will go on a trip to Wuxi( ) 20. Can you see ________?A. what he’s readingB. he reads whatC. what does he read ( ) 21.--Could you tell me how long __ the book?--Three days.A. I can keepB. can I keepC. I can borrow( ) 22. I want to know ___ yesterday?A. why did you come lateB. why you came lateC. why do you come late.( ) 23.--Could you tell me __ tomorrow morning?--Well, it will start at 9:00.A. when the meeting will startB. when will the meeting startC. where the meeting will start( ) 24. Can you tell me ________ ?A. what will we doB. we will do whatC. what we will do( ) 25.—Do you know ___ for Shanghai last night? --- At 9:00.A. what time he leavesB. what time does he leaveC. What time he left ( ) 26. Could you tell me ?A. where the twins wereB. where the twins are C where are the twins ( ) 27. A: Do you know ?B: Yes , he came here by train .A. when he came hereB. how he came herC. why he came here( ) 28. She says she English for ten years.A. learnedB. has learnedC. was learning( ) 29. The teacher told us that the earth round .A. wasB. isC. will be( ) 30. Tell me .A. . what's the matter with himB. what's wrong to himC. what the matter is with him答案：1-5 BAABB 6-10 ACBAB 11-15 CAAAC 16-20 CBBCA 20-25 ABACC 26-30 BBBBAUnit7 现在完成时( ) 1. The house is dirty. We _____ it for weeks.A. didn’t cleanB. don’t cleanC. haven’t cleaned( ) 2. She has ____ the city for about ten years.A. been inB. living inC. live in( ) 3. We have been in China _____ ten years. We love this country.A. inB. sinceC. for( ) 4. They have built the subway in Harbin _____2010.A. sinceB. inC. for( ) 5. Why are you late again? I ____ here for half an hour.A. am waitingB. have waitedC. waited( ) 6. His father _____ the Party since 1978.A. joinedB. has joinedC. has been in( ) 7. Mike ____to the shop. I have to wait for him.A. has been toB. has gone toC. went to( ) 8.Harry Potter is a very nice film. I ____ it twice.A. will seeB. have seenC. saw( ) 9. We ____ Xiao li since she was a little girl.A. have knownB. knewC. know( ) 10. Amy _____ already _____ in this school for two years.A. is, studyingB. will, studyC. has, studied( ) 11. ____ you ____ your lunch? --- Not yet.A. Did, haveB. Have, hadC. Have, ate( ) 12. Hurry up! The play ____ for ten minutes.A. beganB. has begunC. has been on( ) 13.--- May I borrow your bike? --- Sorry, I ____it to Tom.A. lentB. have lendedC. have lent( ) 14. Amy ____ to Japan only once.A. has goneB. have goneC. has been( ) 15. Miss Green isn’t in the office. She _____ to the library.A. has goneB. wentC. has been( ) 16. The famous writer ______ one new book in the past two years.A. is writingB. wroteC. has written( ) 17. Have you met Mr. Li ______?A. justB. agoC. before( ) 18. He has ______ been to Shanghai, has he?A. neverB. alreadyC. ever( ) 19. Both his parents look sad. Maybe they ____ what’s happened to him.A. knewB. have knownC. will know( ) 20. The train ____ for ten minutes.A. has been awayB. has leftC. has gone( ) 21.His uncle ____ for more than 9 years.A. has come hereB. has started to workC. has lived there( ) 22. That old man ____ for over a month.A. has diedB. has been deadC. died( ) 23. _____ has Mr. White been a member of Greener China since he ____ to China?A. How soon, comesB. How often, gotC. How long, come( ) 24. I ____ my homework now. I _____before supper.A. finished, didB. finish, have doneC. have finished, did( ) 25. My parents ____ Shandong for ten years.A. have been inB. have been toC. have gone to( ) 26. I’m a teacher in that school. I ____ here for ten years.A. workedB. have workedC. have working( ) 27. I have _____ my best friend for 5 years.A. knownB. knewC. met( ) 28. I have known ____ him we were children.A. sinceB. yetC. for( ) 29. Freda has taught in this middle school_____ ten years. She teaches so well that most of her students love her a lot.A. inB. forC. since( ) 30. The river has been dirty for ____.A. last yearB. one yearC. A and B1--5CACAB6--10CBBAC 11--15BCAAA 16--20CCABA 21--25CACCA 26--30BABBBUnit9 条件状语从句( )1.Nothing in the world is difficult _____ you put your heart into it.A unlessB thoughC if( )2.You will be late for school ____ you don’t get up early.A butB ifC and( )3.I won’t watch basketball matches ___ James is playing. He pays more attentionto teamwork.A unlessB ifC although( )4.--Please give Alice the story book _____ you see her.--All right.A unlessB orC if( )5.Your handwriting will certainly improve ____ you practice it every day.A thoughB beforeC if( )6.We will go to square to watch the raising of national flag ____ it rains tomorrow.A WhenB ifC unless( )7.The river will become dirtier and dirtier ____ we take action to protect them.A sinceB ifC unless( )8.You’ll be late for school _____ you hurry up.A unlessB asC if( )9.--your aunt often walks the dog in the morning.--Yeah,____ bad weather stops her.A whenB unlessC because( )10.You will fall behind others ____ you work hard.A ifB unlessC though( ) 11. If you _____ to the party, you’ll have a great time.A. will goB. wentC. go( ) 12. I ______ her the answer unless she _______me.A. can not tell, will askB. will not tell, asksC. would tell, asks( ) 13. –What are you going to do tomorrow?--We’ll go to the library tomorrow if it ___.A. isn’t rainB. won’t rainC. doesn’t rain( ) 14. —Do you know when he will come back tomorrow?--Sorry, I don’t know. If he ____ back, I’ll tell you.A. comesB. will comeC. come( ) 15. What will you do if you _____ to the old friends’s home visit?A. goB. wentC. going( ) 16. I’ll give the book to him if he ___ here next Sunday.A. will comeB. comesC. is coming( ) 17. You will not get good marks______you work hard.A. andB. unlessC. if( ) 18.What ____ you ____ unless it rains?A. do, doB. were, doingC. will, do( ) 19. I’ll wake you up if he ____back.A. willB. comeC. comes( ) 20 . The volleyball match will be put off if it _______.A. will rainB. rainsC. rained( ) 21. I’ll go to meet you, if I__________free then.A. would beB. will beC. am( ) 22. Be careful, if you____________want to make mistakes.A. won’tB. don’tC. didn’t( ) 23. Work hard if you_________to get a good mark.A. wantedB. wantingC. want( )24. There is going to______sports meeting next week. If it _____, we’ll have to cancel it.A. be a; will rainB. have a; will rainC. be a; rains( ) 25. If he_________, I_________go swimming alone.A. doesn’t come, will goB. won’t come; will goC. will come; won’t go( ) 26. If you _________a chance to study in a foreign country, just take it.A. gettingB. getC. will get( ) 27. Frank___________a film if he’s free next Saturday.A. seeB. sawC. will see( ) 28.--Please give him my book _____ you see him.--All right.A unlessB orC if( ) 29.You’ll get to school on time _____ you hurry up.A unlessB asC if( ) 30. --Please tell me if your sister ____back.--OK.A. willB. comeC. comes1--5CBACC 6--10CCABB 11--15CBCAA 16--20BBCCB 21--25CBCCA26--30BCCCCUnit10 不定代词( ) 1.There is a cup of tea. Please pass _________ to me.A. oneB. itC. this( ) 2. That hat looks nice. I decide to take _______.A. oneB. itC. ones( ) 3.There is a tall building over there. I mean the _______ near the bus stop.A. oneB. itC. them( ) 4. “What do you think of them？” “I don’t know _____ is better，so I’ve taken _____ of them.”A. what，bothB. what，noneC. which，both( ) 5．一When can we go to visit you？一Anytime ____you feel likeA．one B. if C. so( ) 6. We need a more capable leader，____-with strong will as well as good humor.A．who B．that C．one( ) 7．The number 2008 is a special number，I think，______that will be remembered by the Chinese forever.A．which B. what C. one( ) 8．一How do you like his wife？一She is like a good housekeeper，____for the children’s room is always in a terrible mess．A. somebodyB. nobodyC. nothing( ) 9．All of us want very much to see these recommended movies，_______especially you referred to just now.A. asB. whichC. the one( ) 10．一Do you want tea or coffee？一____, I really don’t mind.A. NoneB. NeitherC. Either( ) 11．I didn’t make clear ______when and where the sports meeting would be held．A．this B. that C. it( ) 12．一Which one can I take？一You can take _____of them; I’ll keep none．A. both B．any C．All( ) 13.Amy likes wearing T-shirt very much. He has one white T-shirt and three blue ________.A. oneB. onesC. one’s( )14. We should protect the beautiful flowers on __________ sides of the street.A. everyB. bothC. either( ) 15.---Who has a dictionary, children ? ---I have_________.A. themB. itC. one( ) 16.I have two sister, but _______of them is a teacher.A. allB. neitherC. both( ) 17.I’ve got several novels written by Mo Yan You can borrow ________if you like.A. itB. oneC. every( ) 18.Jerry and Scott are from the United States, but ________ of them are interested in Beijing Opera.A. allB. bothC. neither( ) 19.They are able to talk openly to one another whenever ________ of them feels hurt.A. eitherB. bothC. some( ) 20.Susan and Liu Mei are good friends ________ have the same hobby and often do their hobbies together.A. Neither of themB. Both of themC. All of them( ) 21. ---When will you go to the museum with me, Saturday or Sunday?---________ of them is OK. I will prepare the coming final-exam.A. BothB. EitherC. Neither( ) 22.---What are you doing now?---We are planting trees on _________ sides of the street.A. allB. noneC. both( ) 23. ---Wow! You’ve got so many clothes.--- But_________ of them are in fashion now.A. allB. bothC. none( ) 24.----Would you like some juice or coffee?---______, thanks . I am not hungry, I only need some water.A. Neither B .Either C. Both( ) 25.There were only two paintings for sale and he bought ___________.A. allB. anyC. both( ) 26.The teachers in that school speak either English or French, or even____________.A. allB. bothC. neither( ) 27---Have you got any books on English grammar? I want toborrow__________.---Yes, here you are. But you must return it on Friday.A. oneB. itC. some( )28. ---Are you free, on Friday or Saturday? Can you go shopping with me? --- I’m on holiday. I think _________ is OK.A. eitherB. bothC. some( ) 29.---Which do you prefer, rice or noodles?---___________, thanks. I am not hungry, I only need some water.A . Neither B. Either C. Both( ) 30.---Your MP4 is quite cheap, where did you buy_______?- --I bought it online. Do you want to buy________?A. one, itB. it, oneC. one, ones1-5 BBACB 6-10 AACBC 11-15 BABBC 16-20 BBBAB 21-25 CCAAC 16-30 BAAABUnit11 情态动词( ) 1. ---You _______ finish all the homework today . We are free tomorrow, too.--- OK,I know that.A. mustn’tB. don’t have toC. can’t( ) 2. ---You _______ swim here, it’s dangerous.---OK. I won’t swim h ere again.A. needn’tB. can’tC. mustn’t( ) 3. You _______ play on the road. It’s dangerous.A.mustn’tB. mayC. can( ) 4. You ___________ go and see a doctor at once because y ou’ve got a fever.A.canB. mustC. may( ) 5. You _______ be late for school again next time.A. mustn’tB. needn’tC. don’t have to( ) 6. His arm is all right. He _________ go and see the doctor.A.has not toB. don’t have toC. doesn’t have to( ) 7. Even the top students in our class can’t work out this problem, so it______ be very difficult.A.mayB. mustC. can( ) 8. Cars and buses ______ stop when the traffic lights are red.A.mustB. needC. can( ) 9. You ___________ worry about your son. He will get well soon.A.mustn’tB. needn’tC. don’t have to( ) 10. ---Must we do our homework first?---No, you_________________.A.mustB. mustn’tC. needn’t( ) 11. You ______ talk loud in the reading room.A.needn’tB. don’t have toC. mustn’t( ) 12. You __________ do it if you don’t want to.A.can’tB. mustn’tC.needn’t( ) 13----Shall I get one more cake for you, Dad?----Thanks, but you _______, I’ve had enough.A.may notB. must notC. needn’t( ) 14.----Can you go swimming with us this afternoon.----Sorry , I can’t . I ______ take care of my little sister at home because my mother is ill.A.canB. mayC. have to( ) 15.----Let’s go to the Xiangshan Park by taxi.----It’s not far. We ______ take a taxi.A.needn’tB. can’tC. mustn’t( ) 16.----Must I finish my homework in class now?----No , you _____. You can do it at home.A.mustn’tB. may notC. needn’t( )17. --- _________ I take the newspaper away?----No, you mustn’t. You ______ read it only here.A. Must, canB. May, canC. Need, must( ) 18.Students in our school ______ know shouting is not allowed in the library.A.canB. mayC. must( ) 19.Drivers ______ wear seat belts while their cars are running on the road.A.needB. canC. must( ) 20.According to the new traffic law, everyone in a car ______wear the seat belt.A.canB. mayC. must( ) 21.From March 23rd 2013 , anyone under the age of 14 ______ go into Disney’s US parks alone.A.couldn’tB. mustn’tC. needn’t( ) 22.Excuse me. Sir. You ______ open the door before the train stops. A.mustn’t B. needn’t C. may not( ) 23.That T--shirt _____ be expensive because it’s by a famous designer.。