1 . —— Guess what? I’ve won the third prize in the writing competition in Tianjin area.
—— You don’t say. I know you are not good at English. You ______ great efforts!

A．should have made

B．must have made

C．might make

D．could make

2 . Ms Smith _________ have thought Johnson was worth it or she wouldn’t have wasted time on him. I suppose.

A．might

B．must

C．would

D．should

3 . —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

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

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

6 . —I wonder why Mr Green hasn’t showed up at the meeting yet.
—I’m not sure, but he ________ in a traffic jam driving here.

A．could be stuck	B．might stuck
C．might have been stuck	D．must have stuck

7 . —Few of my fellows passed the politics quiz this time on campus.
—How come? It ________ tough.

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

8 . It is cold and the ground is wet; it ________ have rained last night.

A．might

B．can

C．must

D．should

9 . I must have _________(误解)what you meant.