1 . Your mother________have fallen asleep.You were making so much noise so late in the yard then！

A．mustn’t	B．can’t
C．mightn’t	D．shouldn’t

2 . The villagers are extremely thankful to Mr. Jason, without whose help the road to the village_________.

A．can’t be built

B．couldn’t have been built

C．mustn’t be built

D．mustn’t have been built

3 . I ________ have been more than six years old when the accident happened.

A．shouldn’t

B．couldn’t

C．mustn’t

D．needn’t

4 . George _________ too far. His coffee is still warm.

A．must have gone	B．might have gone
C．can’t have gone	D．needn’t have gone

5 . —I ________ myself more—it was a perfect day.
—Me, too. It’s years ________ I enjoyed myself so much.

A．couldn’t have enjoyed; since

B．needn’t have enjoyed; since

C．wouldn’t have enjoyed; before

D．shouldn’t have enjoyed; before

6 . (2013·高考四川卷)—Why are your eyes so red? You________have slept well last night.
—Yeah, I stayed up late writing a report.

A．can’t	B．mustn’t
C．needn’t	D．won’t

7 . But for their common interests, they_____ cooperated so smoothly in the investigation of the case.

A．could have

B．will not have

C．could not have

D．have not

8 . The boss ______ the worker how to do it, or the accident couldn’t have happened.

A．can’t have told

B．ought to tell

C．could have told

D．mustn’t have told

9 . Listen, Mary ______ have done it. She’s been with me at the shop all day.

A．wouldn’t	B．shouldn’t
C．needn’t	D．couldn’t

10 . He ________ without saying goodbye to them, for he always has good manners.

A．can’t have left	B．may not have left
C．shouldn’t have left	D．mustn’t have left