23．It was required that each student ________ enough food for the picnic.

　A. bring　　　　　　　 B. brought　　　　　 C. would bring　　 D. had brought

22．The young man insisted that he ________ nothing wrong and ________ free.

　A. did; set　　　　　　　　　　　　　　　　　　　　 B. had done; should be set

　C. do; be set　　　　　　　　　　　　　　　　　　　 D. had done; must be set

21．It’s time that you ________ home and I’d rather you ________ again tomorrow.

　A. are going; will come　　　　　　　　　　　 B. go; are coming

　C. went; came　　　　　　　　　　　 　　　　　　　 D. would go; would come

20．The soldier died in the hospital. He ________ if the doctor ________ on him two hours earlier.

　A. might be saved; operated

　B. could be saved; had operated

　C. could have been saved; had operated

　D. had been saved; was operated

19．Our former math teacher died of cancer last term，otherwise he ________.

　A. will still work　　　　　　　　　　　　　　　　 B. should still work

　C. would still have worked　　　　　　　　　 D. would still be working

18．-It was the drug，not the disease，that killed the boy.

　　-He would be still alive today if he ________ that drug.

　A. not take　　　　　　　　　　　　　　　　　　　　 B. shouldn’t have taken

　C. didn’t take　　　　　　　　　　　　　　　　　　 D. hadn’t taken

17．Isn’t it about time that you ________ to pick up the visitors from New York?

　A. went　　　　　　　　　　　　　　　　　　　　　　 B. should go

　C. go　　　　　　　　　　　　　　　　　　　　　　　　 D. will go

16．Mr. Fang spoke slowly in order that we ________ him.

　A. should follow　　　　　　　　　　　　　　　　 B. follow

　C. might follow　　　　　　　　　　　　　　　　 D. followed

15．Without your help，we ________ this task.

　A. don’t finish　　　　　　　　　　　　　　　　　　　　　 B. will not finish

　C. didn’t finish　　　　　　　　　　　　　　　　　 D. would not have finished

14．I’d rather you ________ know the secret.

　A. didn’t　　　　　　　　　　　　　　　　　　　 B. hadn’t　

　C. not　　　　　　　　　　　　　　　　　　 D. not to