1 . 选词填空
1. —Must I finish the task right now?
—No，you ________ (don’t have to/mustn’t)
2. It’s so near. We ________ have taken a taxi.(shouldn’t/can’t)
3. You ________ have spent so much time playing computer games.(mustn’t/oughtn’t to)
4. ―Shall I leave the room so that you two can talk?
―No, you ________.(mustn’t/needn’t)
5. He ________ have missed the train; he arrived atthe train station two hours earlier.(can’t/mustn’t)
6. You ________ start at once if you want to catch the bus.(have to/ought to)
7. They ________ stay in the office last night because of the snowstorm.(had to/must)
8. We _______ have helped him; in that case, he would have been able to finish the work.(should/can)
9. He finished all the work himself; in fact, he ________ have asked his friends for help.(need/could)
10. Something terrible ________ have happened if Li Chang was not coming to eat in his restaurant as he always did.(have to/must)

2 . Something ________ have happened to Mary—She’s been crying all morning. (Possibility) (用适当的词填空)

3 . ________________ (肯定有人打开了笼子). The dog couldn’t have escaped on its own. (根据汉语提示完成句子)

4 . —— 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

5 . —That woman has been taking care of the two white tigers for 8 years.
—Oh, dear! She ________ a lot of difficulties!

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

7 . 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

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

9 . 你一定也经历过令你失望的时刻。 (must have done; when引导定语从句) (汉译英)

10 . Tony looks so happy. He ________ a contract with the famous basketball club.

A．should sign	B．should have signed
C．must sign	D．must have signed