1主语从句练习及答案

主语从句练习

单项选择题

1._____ as much as one-fifth of all timber harvested is not used.

A. The estimate

B. The estimate

C. They are estimated

D. It is estimated that

2._____ was once regarded as impossible has now become a reality.

A. That

B. Which

C. Who

D. What

3._____ we have achieved is attributed to the guida nee of our pare nts.

A. Whoever

B. Whatever

C. However

D. That

4._____ you say now can ' t make up for what you ' ve^Sone.

A. No matter

B. Whatever

C. However

D. That

5.Although ______ happe ned in this developed country sounds like scie nee fiction, it

could occur elsewhere in the world.

A. which

B. what

C. how

D. it

6._____ she had forgotte n to take her no tebook.

A. That occurred to her

B. She occurred that

C. To her that occurred

D. It occurred to her that

7.I am sure that _____ she said is wrong.

A. which

B. all

C. this

D. what

8.We lost our way in the forest, and _____ made matters worse was that it

was

gett ing dark.

A. that

B. which

C. it

D. what

9._____ occurred to him that he had forgotte n to lock the door whe n he left home.

A. This

B. It

C. That

D. These

10.or not is still un certa in.

A. He'soming

B. If he is coming

C. That coming

D. Whether he' coming

11.It ' _ he' be able to come.

A. doubt whether

B. doubtful

C. doubt it

D. doubtful whether

12.It is ____ that the bridge has existed for more tha n three cen turies .

A. appeared

B. rise n

C. said

D. born

13._____ he saw both surprised and frighte ned him.

A. That

B. When

C. What

D. Which

14._____ is a spell of warm sunshine.

A. What do we all need.

B. What all we n eed

C. What we n eed

D. What we all need

15._____ is a pity that he should feel so upset.

A. What

B. That

C. He

D. It

16._____ a spo onful of soil can tell us so much about the structure and early history of the moon.

A. Remarkable

B. Quite remarkably

C. It is remarkable that

D. It is remarkable

17._____ you nomin ate will be elected.

A. Who

B. Which

C. Whomever

D. That ' s

18._____ book you borrow must be retur ned with in a week.

A. What

B. Which

C. Whichever

D. That ' s

19._____ is troubling me is that I don ' t have much experienee in intern ati onal commerce.

A. It

B. That

C. Which

D. What

20._____ they wil go there to try ano ther experime nt has not bee n decided

yet.

A. Whether

B. If

C. About whether

D. Why

根据提示，完成句子。

1.________________________________________ hasn ' t been decided yet.(pick)

谁将去接他还没有确定。

2.________________________________________ rema ins unknown .(fi ni sh)

我们是否能按时完成工作还不知道

3.____________________________________________ is none of my bus in ess.(like)

你喜不喜欢他都与我无关。

4._________________________________________________ i s being discussed.(abroad)

他将何时出国正在讨论之中。

5._________________________________ in lear ning En glish is eno ugh

practice.(matter)

英语学习中最重要的是足够的练习。

6.It worried her a bit ______________________________________________________ .(tur n)

她的头发正在变白让她有些担忧。

7.After Yang Liwei succeeded in circli ng the earth,

_________________________________ our astr on auts walk in space. (desire)

杨利伟成功地环绕地球后，我们希望的是宇航员在太空漫步。

8._________________________________________________ s hould be pun ished.(break)

任何违法的人都应该被惩罚。

9.______________________ we can lear n four foreig n Ian guages at the same

time.(seem)

我们能同时学四门外语似乎不可能。