29. The streets are all wet. It during the night.
A. must be raining B. had to rain
C. must have rained D. had rained
30. England’s chief exports are coal, cars and cotton goods, cars the most important of these.
A. have been B. are
C. be D. being
31. Everything was so expensive during the war that it was hardly to save penny.
A. likely B. feasible
C. probable D. possible
32. The automation has made it possible to great changes in industry.
A. bring about B. bring down
C. bring out D. bring up
33. The police stopped him because he the traffic regulation.
A. damaged B. destroyed
C. broke D. corrupted
34. All too it was time to go back to school after the glorious summer holidays.
A. fast B. soon
C. quick D. often
35. The chief manager refused to on the rumor that he was going to retire.
A. explain B. comment
C. speak D. talk
36. Mr. Brown gradually a knowledge of the subject.
A. required B. inquired
C. achieved D. acquired
37. If I am not when you come to my office, ask for my secretary.
A. suitable B. available
C. comfortable D. proper
38. Peasants supply workers with food, and workers supply peasants with manufactured goods.
A. in turn B. by turn
C. for return D. by return
39. Let’s go out during the break to our legs.
A. stretch B. expand