50. The 13 measures of psychological well-being are used to _______。

32.

41. The best title of the passage can be ________

2.The principle stressed using multimedia would never replace the one-to-one ________ between pupil and teacher. 

33.磊磊参加的合唱团少来了一个人，没人发现，但今天少来了两人，磊磊一下就发现了，这说明磊磊（ ）能力强。

44. What can we learn from some recent studies ________

47. What does Grace Kao say about interracial lodging?

52. It can be inferred that the author is most probably ________.

18. Both approaches agree on what is depicted in the poem, but not how it should be ________.

23.

6. —Poor and backward area ________ Western China is, many college students are willing to work there after graduation.   —I can’t agree more. More chances of employment are available.

12. A Russian plane broke up in the air, ________ all 224 people on board which was believed ________ by a bomb planted by Islamic State.