( )52. Learners can get credits by attending short courses.

56. 由于没有汽车，他感到购物很不方便。

17. ____ his amazement, he has got the second prize in the speech contest.

34. Even though the customer was very rude, the shop assistant ____ calm and polite.

31. ____, he can now only watch it on TV at home.

39. What does Celine particularly like about Guanlao’s library?

66. In recent years, an increasing number of college students are involved in various volunteering causes. There is no denying that volunteers make great contributions to society. On the one hand, in any big events such as Beijing Olympic Games and Shanghai World Expo, human resources are surely in great demand. Whatever a volunteer can do is helpful for the event. On the other hand, students can reap great benefits from volunteering work. Various experiences in their volunteering practice guarantee their brighter future career.

27. It took her a while to ____ living alone.

36. The writer introduces the subject in the first paragraph ____.

57. 尽管是十五年前制造的，这台机器仍然状态良好。

22. _____, there were still some tickets available for the concert.

7.