27. I was giving a talk to a large group of people, the same talk I _______ to half a dozen other groups.

A. was giving　　　 　 B. am giving

C. had given　　　　 　 D. have given

26. “You’ve left the light on.” “Oh, so I have. _____ and turn it off.”

A. I’ll go B. I’ve gone

C. I go　　 D. I’m going

25. He has changed a lot. He _______ not what he _______.

A. is, is　 B. was, was

C. is, was　　　 D. was, is

24. Great changes ______ in my hometown in the past twenty years.

A. took place　 B. have taken place C. were taken place　　　 D. have been taken place

23. “I suppose you _________ that report yet?” “I finished it yesterday, as a matter of fact.”

A. didn’t finish　　　 B. haven’t finished　 C. hadn’t finished　 D. wasn’t finishing

22. -The dinner was delicious!

-I agree. I’m so full.

-That’s too bad. But some dessert ______.

A. has ordered　　　　　　　　　　　　 B. will be ordered

C. has been ordered　　　　　　　　　　 D. was going to be ordered

21. In the terrible dream he found himself on the surface of a strange animal but it ______ to be his own pillow.

A. turned out　 B. turned over　 C. turned down D. turned off

19. Scientists say they have found a way to produce the human body’s own cancer-killing cells through gene treatment, ______ new hope to cancer sufferers.

A. offering　　　 B. showing　　 C. taking D. making　　　

20 New technology ______ to make sure that the cars, taxis, buses and trains we use ______ the air.

A. is used; not to pollute B. has used; is not polluted

C. is being used; do not pollute　　 D. has been used; to pollute

18. ---- If it hadn’t been raining so hard, I might have been home much earlier.

　 ---- It’s too bad you _____ it. Nancy _____ here and she _____ to see you.

　 A. didn’t make; is; was　

　 B. won’t make; will be; wants

　 C. didn’t make; was; wanted

　 D. wont’ make; would be; wanted

17. The prices are _____ fast these days. Nobody can get the prices _____.

　 A. going down; to bring down　　　　　

　 B. rising; to be bringing down

　 C. raising; bring down

　 D. going up; brought down