1 . —The woman biologist stayed in Africa studying wild animals for 13 years before she returned.
—Oh, dear! She ______ a lot of difficulties!

A．may go through	B．might go through
C．need have gone through	D．must have gone through

2 . Paul did a great job in the speech contest. He many times last week.

A．need have practised	B．might practise
C．must have practised	D．could practise

3 . 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

4 . 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

6 . Peter         too far. His coffee is still warm.

A．mustn't have done	B．might have gone
C．can't have gone	D．needn't have gone

7 . —Congratulations! You ________ great efforts for the English speech contest.
—Thanks. I do appreciate my teacher’s guidance.

A．must have made

B．should have made

C．could make

D．would make

9 . 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

10 . —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