16. - You know that you were driving 100 km an hour, don't you?

- No officer, I ____. This car doesn't do more than 80.

A. may not have been 　 B. couldn't have been

C. mustn't have been 　　 D. shouldn't have been

15. Looking at my determined face, the big boy ______ pick up the fight.

　 A. dares not　　　 B. dare not　　　 C. doesn't dare 　　 D. dares not to

14. He began to write two hours ago. He ______ have finished the article now.

　 A. must　　　　　 B. ought　　　　　　 　 C. would　 　 D. had to

13. I___ such a mistake again. 　　A. will never make

B. shall never make　　 C. can never do　 　 　 D. need never do

12. - When can I come for the photos? I need them tomorrow afternoon.

　 - They_________　 be ready by 12:00.

A. can　　　 　 B. should　　　 　　 C. might　　 　　　 D. need

11. --- I hear you've got a set of valuable Australian coins. ____I have a look ?　　　

--- Yes, certainly. 　　A. Do B. May　　 C. Shall　 D. Should

10.-- Where is Jack? I can’t find him anywhere.-- He ___ his homework upstairs.

　 A. might have done B. must have done　 　　 C. might be doing D. must do

9. My parents never remember my telephone number, and they always ______ look it up.　 A. must　　　 B. can　　 　　 C. should　　　 　 D. have to

8. She ______ into the thick forest alone on such a dark night.

　 A. dares not go B. dares not to go　 C. dare not to go　 D. doesn’t dare to go

7. I’ve decided to take the job and I ______ change my mind.

　 A. mustn’t　　 B. can’t　　　　 C. won’t　　　 　　 D. may not