17. ---Catherine, I have cleaned the room for you.

---Thanks. You_____ it. I could manage it myself.

　A. needn’t 　do　 　　　 B. needn’t 　have done 　　　　　　　　　　　 　　 C. mustn’t 　do　 　 D. shouldn’t 　have done

16.-Where is my cell phone? I can find it nowhere.

-You it stolen while on the bus.

A. must have　　　　　　　　　　 B. should have had

C. may have had 　　　　　 D. can have

15. She suffered a mental disease for quite some time and in the end she _____ go into a mental hospital.

　A. had to　 　　　　　　　 B. must　 　　　　　　　　　　 C. would like to　　　　　 D. could

14. - Finally I got to my grandmother’s home on foot.

- Really? You _______ a ride there.

A. must have taken　 B. could have taken

C. shouldn’t 　have taken 　　　　　　　　　　　　　 　　　　　　　　　　　　　　　　　　 D. couldn’t 　have taken

13.　Since you have come so far with your experiment，you carry it through to the end.

A. may　　　　　　　　　　 B. might 　　　　　　　　　　 C. may well 　　　　　　　　 D. may as well

12.　– Lucy doesn’t 　mind lending you her dictionary.

-- She ______ . I've already borrowed one.

A. can't　　　　　　　　　　　 B. mustn't 　　　　　　　　　　 C. needn't　 　　　　　　　　 D. shouldn't

11. Jack’s ill, so they ______ change their plans.

　A. must 　　　　　　　　　 B. should 　　　　　　　　　　 C. have got to　 　　　　 D. ought to

10. Excuse me, six, Mr. White has arrived. 　　　　　　　he wait outside or just come in ?

A. Shall　 　　　　　　　　　 B. May 　　　　　　　　　　　 C. Could 　　　　　　　　　　 D. Must

9. My father ______ have a large farm and he liked it very much.

A. would　 　　　　　　　　 B. used to 　　　　　　　　　 C. could　 　　　　　　　　　 D. ought to

8. You ______ see the doctor, Joe. You don’t 　look very well.

　A. must 　　　　　　　　　 B. shall　　　　　　　　　　 C. may　 　　　　　　　　　　 D. can