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

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

32. She had to ____ her umbrella from the Lost Property Office.

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

7.

43. If a jacket is “unisex”, it ____. 

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

3.

49.If you don’t want to answer a complex email immediately, you can give the sender ___49___, telling him or her when you will write back.

2. 

( )51. Some education institutions provide programs which offer credits to help CE students get some recognized industry qualifications.

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