1 . --- He worked out such different questions at a very young age.
--- Oh, he ______ a very smart student then.

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

2 . I have lost one of my gloves. I __________it somewhere.

A．must drop	B．must have dropped
C．must be dropping	D．must have been dropped

3 . It ___________last night, for the ground is wet outside.

A．would be raining	B．would have rained
C．must rain	D．must have rained

4 . He _____ have finished his work; otherwise, he wouldn’t be enjoying himself by the seaside.

A．should

B．must

C．need

D．can

5 .    When I suggested that someone in the village ____ his wine, he didn’t believe.

A．must have drunk

B．should drink

C．have drunk

D．has drunk

6 . ------ Tom is never late for work. Why is he absent today?
------ Something _________ to him.

A．must happen	B．should have happened
C．could have happened	D．must have happened

7 . I told your friend how to get to the hotel,but perhaps I___have driven her there.

A．could	B．must
C．might	D．should

8 . The teacher_____have thought Johnson was worth it or she wouldn’t have wasted time on him, I suppose.

A．should	B．can
C．would	D．must