求一关于情态动词can的专项练习题(附答案).

求一关于情态动词can的专项练习题(附答案).

1. In China even barren mountains_____ turned into fertile fields.

A)can B) can be C) is able to D) is able to be

2. At that time we thought the story_____ not be true.

A)could B)was able C)is able D)must

3. You_____ the work better.

A)could did B)can have done C)could have done D)must did

4.The room is in a terrible mess; it ____cleaned.
　　
A) can't have been　　B) shouldn't have been　　C) mustn't have been 　　D) wouldn't have been

5.Mary ____my letter, otherwise she would have replied before now.
　　
A) should have received　　 B) has received
　　C) Couldn't have received　　D) ought to have received

6.An Englishman who ____not speak Italian was once traveling in Italy.
　　
A) must　　B) could　　C) may 　D) might

7. He ____the 9:20 train because he didn't leave home till 9:25.
　　
A) can reach 　　B) could catch　　C) may not catch 　　D) couldn't have caught

8.Mr Wang ______ be in Nanjing now, he went to Beijing only this morning.

A. mustn’t B. may not C. can’t D. needn’t

9. –Who is the man over there? Is it Mr Li?

--No, it ______ be him. Mr Li is much taller.

A. musn’t B. may not C. can’t D. needn’t

10. A computer ______ think for itself, it must be told what to do.

A. can’t B. couldn’t C. may not D. might not

答案：1)B 2)A 3)C 4)A 5)C 6)B 7)D 8)C 9)C 10)A