28. The workers are going all out to make the output __________ three times what it was five years ago.

　 A. grow to　　　　　　　　 B. grow up　　　　　　 C. grow by　　　　　　 D. grow into

27. Yesterday morning in a city in the USA, a crowd of dustmen went on a strike to _________ complaints about their low pay.

　 A. voice　　　　　　　　　　 B. tell　　　　　　　　　 C. speak　　　　　　　　 D. say

26. A person who believes that he is incapable will not make a real __________, because he feels that it would be useless.

　 A. decision　　　　　　　　 B. success　　　　　　　 C. effort　 　　　　　　　 D. trouble

25. I want to leave now; I can’t ____ nothing useful here.

　 A. stand to do　　　　　　 B. stand doing　　　　 C. stand being done　　　 D. stand to be doing

24. The Tower of London is ____ the Church tower.

　 A. twice high than　　　　　　 　　　　　　 B. two times as high as

　 C. twice higher as　　　　　　 　　　　　　 D. three times the height of

23. Other simple information was recorded on the walls of caves and buildings in the _________ of pictures.

　 A. way　　　　　　　　　　　　　　 B. means　　　　　　　 C. form　　　　　　　　 D. terms

22. There is still a long way to go to solve all the problems ____________ conservation of natural resources.

　 A. concerning　　　　　　 B. concerned　　　　　 C. concerning about D. concerned about

21. The young dancers looked so charming in their beautiful clothes that we took

　 ______________ pictures of them.

　 A. many of　　　　　　　 B. large amounts of　　　 C. the number of　 D. a good deal of

20. What is ____________ is that try as they may, they can’t avoid the economic crisis.

　 A. beneficial　　　　　　 B. difficult　　　　　　 C. effective　　　　　　 D. obvious

19. When a discussion is under way, everybody is welcome to have the ___________ in class.

　 A. floor　　　　　　　　　　 B. time　　　　　　　　　 C. chance　　　　　　　　　　 D. right