41. She set out soon after dark _______home an hour later.

A. arriving B. to arrive C. having arrived D. and arrived

42. __I must apologize for _______ahead of time.

__That’s all right.

A. letting you not know B. not letting you know

C. letting you know not D. letting not you know

43. Rather than ________on a crowded bus ， he always prefers ________a bicycle.

A. ride ; ride B. riding ; ride C. ride ; to ride D. to ride ; riding

44. __You were brave enough to raise objections at the meeting.

__Well ， now I regret _________that.

A. to do B. to be doing C. to have done D. to have met

45. We agreed __________here but so far she hasn’t turned up yet.

A. having met B. meeting C. to meet D. to have met

46. Paul doesn’t have to be made ________， He always works hard.

A. learn B. to learn C. learned D. learning

47. Having a tip abroad is certainly good for the old couple ， but it remains _______whether they will enjoy it.

A. to see B. to be seen C. seeing D. seen

48. The research is so designed that once ________nothing can be done to change it.

A. begins B. having begun C. beginning D. begun

49. __How do you deal with the disagreement between the company and the customers?

__They key _______the problem is to meet the demand ______by the customers.

A. to solving ; making C. to solving ; made

C. to solve ; making D. to solve ; made

50. Little Jim should love ________to the theater this evening.

A. to be taken B. to take C. being taken D. taking