1 . —Why are your eyes so red? You______ well last night.
—Yeah, I stayed up late struggling with the homework.

A．mustn’t have slept	B．wouldn’t have slept
C．couldn’t have slept	D．needn’t have slept

3 . — I think you ________ there in person; a phone call would have been fine.
— It is a good chance to know more of you from your parents.

A．couldn’t have been

B．needn’t have been

C．wouldn’t be

D．shouldn’t be

4 . I appreciate your kindness very much, but you________ have bought such an expensive present.

A．needn't

B．mustn't

C．wouldn't

D．couldn't

5 . — Excuse me, where is George?
— 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

6 . —It’s really tiring for me to stand in the queue for three hours to get the G-train ticket.
—You _______. You could have got one online.

A．mustn’t have

B．shouldn’t have

C．can’t have

D．needn’t have

7 . Using supercomputer, many labs are now conducting experiments that ________ possible in the past.

A．would have been	B．might have been
C．shouldn’t have been	D．couldn’t have been

8 . —Celia looks so upset. She ________ the driving test.
—It is the second time that she has failed in the test.

A．can’t pass

B．can’t have passed

C．mustn’t pass

D．mustn’t have passed

9 . ---I think you ______ there in person; a phone call would have been fine.
---It’s OK and I was so glad to have seen your mum.

A．couldn’t have been	B．shouldn’t be
C．needn’t have been	D．wouldn’t be

10 . George ______ too far. His tea is still warm.

A．should have gone

B．can’t have gone

C．might have gone

D．needn’t have gone