1 . 一I think I saw Mr. Smith at yesterday's party.
一He ______ there. He is now on a business trip in Greece. And he left the day before yesterday.

A．mustn't have been	B．couldn't have been
C．might not be	D．should not be

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 . —How do you find the club?
—I        it. Everyone is saying its management is going from bad to worse.

A．couldn’t have joined	B．might have joined
C．would rather not have joined	D．would like to have joined

4 . —Did you hear that Jack used to be a policeman for two years?
—You’re kidding! He ______, for he’s too short.

A．can’t be	B．can’t have been
C．may not be	D．may not have been

5 . — They are said to have been familiar with each other.
— But they_________. They were introduced only hours ago.

A．may not have been	B．couldn’t have been
C．mustn’t have been	D．needn’t have been

6 . —What did you say to your sister? I saw her crying in the room.
— It _________ my fault. I just said hello to her when I met her, nothing else.

A．must have been	B．can’t have been
C．oughtn’t to be	D．should have been

7 . We ________ such great achievements without your efforts. Thanks a lot.

A．can’t have made	B．couldn’t have made
C．were unable to make	D．are unable to make

8 . ----Have you heard of Wang Meng?
----Yeah. She ______ have done better. She won China’s first gold medal at Turin.

A．should

B．might

C．needn’t

D．couldn’t