21. He told me how he had given me shelter and food, otherwise I ____ of hunger.

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

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

48.With an initial scan, you will find emails that need your   48   .

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

18. There was so much noise in the classroom that the teacher couldn’t make himself ____.

( )15. Even if the one you are talking with is impolite, you should also respond to him or her for politeness.

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.

24. Although I spoke to her about the matter several times, she took little ____ of what I said.

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

58. 这家工厂只有不到十年的历史，但产品已经进入国际市场。

61. 为了避免经过市中心，出租车司机绕道而行。