31. The scientists were waiting to see the problem ____ 　.　

A. set　 　　　　　　B. settled　　　　 C. to settle　　　 　D. settling

30. The foreigner tried his best, but he still couldn’t make his point ____ 　.

A. understand　 　　B. understanding 　C. to understand 　 　 　 　D. understood

29. People ____ in the city do not know the pleasure of country life.

A. live　　 　 　　B. to live　　 　 　C. lived　　 　 　　　 D. living

28. The ____ price will save you one dollar for each dozen.

A. reduce　　　 　B. reducing　　 　C. reduced　　 　　 　D. reduces

27. I’ve never heard the word _____ in spoken English.　

A. use　　　　　 　B. used　　 　　C. using　　 　 　　　D. using

26. The result of the test was rather _____ .　

A. disappointed　 　B. disappointing　 C. being disappointed 　 D. disappoint

25. There was so much noise in the room that the speaker couldn’t make himself _____.

A. being heard　　 　 　B. hearing　 　 　 　 　　C. heard　　 　 　 D. hear

24. With the money ___, he couldn’t buy any ticket.

A. to lose　 　 　 　 　B. losing　 　 　 　 　 　C. lost　 　 　 　 　 　D. has lost

23. Here are some new computer programs _________ for home buildings.

A. designing　 　　　B. design　 　 　 　 　　C. designed　 　 　 D. to design

22. We're _________ to listen to her ________ voice. It's ________　to hear her sing.

A. pleased; pleasing; pleasure　　 　 　 　 　B. pleased; pleasant; a pleasure

C. pleasing; pleased; a pleasure　　 　 　 　 　D. pleasing; pleasant; pleasure