15. If city noises _______ from increasing, people _______ shout to be heard even at the dinner table 20 years from now.

　 A. are not kept; will have to　　　　　　　　　　　　　　　　 B. are not kept; have to　

　 C. do not keep; will have to　　　　　　　　　　　　　　　　 D. do not keep; have to

14. He ________ you more help, even though he was very busy.

A. might have given　　　 B. might give　　　　　　　　 C. may have given　　　　 D. may give

13. Without electricity, human life ________ quite different today.

　　 A. is　　　　　 B. will be　　　　　　　　 C. would have been　　 D. would be

12. I didn’t see your sister at the meeting. If she _________, she would have met my brother.

　　 A. has come　　　 B. did come　　　　　　　　 C. came　　　　　 D. had come

11. ---- If he_____　 , he ______ that food.　　　　

---- Luckily he was sent to the hospital immediately.

　　 A. was warned; would not take　　　　　　　　　 B. had been warned; would not have taken

　　 C. would be warned; had not taken　　　　　　　　　　 D. would have been warned; had not taken

10. If only I _________ to the lecture!

　　 A. listen　　　　　　　　　　　　 B. will listen　　　　　 　 C. am listening　　　　 D. had listened

9. I ' d rather that you ________ home.

　　 A. went　　　　　　　　　　　　 B. have gone　　　　　　　　 C. will go　　　　　　　　　　 D. had gone

8. It is high time we ________ home.

　　 A. will go　　　　　　 B. would go　　　　　　　　 C. have gone　　　　　　　　 D. went

7. That is a good book. You 　________ it yesterday.

　　 A. could buy　　　　 B. should buy　　　　　 　 C. should have bought　 　 D. bought

6. I am sorry that he ________ in such poor health.

　　 A. are　　　　　　　 B. shall be　 　　　　　　　 　　 C. were　　　　　　 D. should be