1 . Look at his sad face! He must ________(hear) of the bad news. (用所给词的适当形式填空)

2 . —You look so tired. You__________late last night.
—Yes, I had to finish an important report last night so I didn't sleep at all.

A．could sleep	B．should have slept
C．may sleep	D．must have slept

3 . --Did they visit the famous university?
--No. They _______ it, but they spent too much time shopping.

A．must have visited

B．could have visited

C．can’t have visited

D．shouldn’t have visited

4 . Where is my pen？I ____it.

A．might lose	B．would have lost
C．should have lost	D．must have lost

5 . I was on the highway when this car went past followed by a police car. They ______ at least 150 kilometers an hour.

A．should have been doing	B．must have been doing
C．could have done	D．would have done

6 . —It’s amazing that Beijing and Zhangjiakou have won the bid for the 2022 Winter Olympics!
—Sure it is! The government ________ have made great efforts!

A．could	B．should
C．might	D．must

7 . I didn’t hear the phone.   I ___   asleep.

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

8 . ---I have looked for my keys everywhere, but I can’t find them.
---Sorry to hear that. You _____ them somewhere.

A．must lose	B．should lose
C．must have lost	D．should have lost