43. Leaving one’s job, _no matter what it is (不管是什么工作) is a difficult change, even for those who look forward to retiring.
44. Compared with the place where I grew up（与我成长的地方相比），this town is more prosperous and exciting.
45. Not until he had accomplished his mission_ (直到完成使命)did he realize that he was seriously ill.
46. _Thanks to a serious of new inventions__（多亏了有一系列的发明），doctors can treat this disease successfully.
47.in my sixties, one change I notice is that I am more inclined to get tired than before（我比以前更容易累了）
48.i am going to pursue this course, no matter what cost I have to sacrifice（无论我要做出什么样的牺牲）.
49. I would prefer shopping online to shopping in a department store because it is more convenient and time-saving ( 他更加方便和省时). 50. Many Americans live on credit, and the quality of life is measured in terms of how much they can loan（是用他们能借到多少来衡量的）, not how much they can earn.
51. The finding of this study failed to _take people’s quality of sleep into account（将人们的睡眠质量考虑在内）.
52. The prevent and treatment of AIDS is _the field where we can cooperate（我们可以合作的领域）.
53. Because of the leg injury, the athlete_decided to quit the match（决
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定退出比赛）.
54. To make donations or for more information, please contact us at the following address（按一下地址和我们进行联系）.
55. Please come here at ten tomorrow morning at your convenience（如果你方便的话）
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