1 . There was no one else in the classroom, so he ______ it by himself.

A．should have done

B．need have done

C．must have done

D．could have done

2 . —Mary’s score on the test is the highest in her class.                 
—Really?She ________ have studied very hard.

A．may	B．ought to
C．must	D．should

3 . Jack described his father, who must ________(be) a brave boy many years ago, as a strong­willed man.
杰克把他的父亲描述成一个意志坚强的人，多年以前他肯定是一个勇敢的男孩。

4 . We________ last night, but we went to appreciate the flowerbeds and streetlights in Tian’anmen Square instead.

A．might study	B．could study
C．should have studied	D．must have studied

5 . —You shouldn’t have talked back to our teacher like that.It was awfully impolite.
—You are right.I ________ crazy at that moment.

A．must have been	B．must be
C．could have been	D．should have been

6 . —I saw Lily in the teacher’s office just now.
—You _________ her, she has gone back home.

A．must not see

B．mustn’t have seen

C．can’t have seen

D．couldn’t see

7 . I believe he ________ an accident, otherwise he ________ have arrived on time.

A．might have；would

B．should have had； should

C．could have； should

D．must have had； would

8 . Her round figure, seen in the Tang Dynasty, ________ the admirable image.

A．would have been considered	B．would have considered
C．had considered	D．must have been considered

9 . Harry is feeling uncomfortable. He ________ too much at the party last night.

A．has to drink	B．must have drunk
C．could be drunk	D．needs to drink

10 . My key isn’t in my backpack. Where on earth________ I have put it?

A．can

B．would

C．should

D．must