36. Doing your homework is a sure way to improve your test scores, and this is especially true ________ it comes to classroom tests.
A) when
B) since
C) before
D) after（A）
37. Careful surveys have indicated that as many as 50 percent of patients do not take drugs ________ directed.
A) like
B) so
C) which
D) as（D）
38. In developing countries people are ________ into overcrowded cities in great numbers.
A) breaking
B) filling
C) pouring
D) hurrying（C）
39. It’s reported that by the end of this month the output of cement in the factory ________ by about 10%.
A) will have risen
B) has risen
C) will be rising
D) has been rising（A）
40. If I had remembered ________ the window, the thief would not have got in.
A) to close
B) closing
C) to have closed
D) having closed（A）
41. There are other problems which I don’t propose to ________ at the moment.
A) go into
B) go around
C) go for
D) go up（A）
42. Don’t get your schedule ________; stay with us in this class.
A) to change
B) changing
C) changed
D) change（C）
43. It is quite necessary for a qualified teacher to have good manners and ________ knowledge.
A) extensive
B) expansive
C) intensive
D) expensive（A）
44. Jean doesn’t want to work right away because she thinks that if she ________ a job she probably wouldn’t be able to see her friends very often.
A) has to get
B) were to get
C) had got
D) could have got（B）
45. I felt somewhat disappointed and was about to leave, ________ something occurred which attracted my attention.
A) unless
B) until
C) when
D) while（C）
46. A love marriage, however, does not necessarily ________ much sharing of interests and responsibilities.
A) take over
B) result in
C) hold on
D) keep to（B）
47. The ability to store knowledge makes computers different form every other machine ________ invented.
A) ever
B) thus
C) yet
D) as（A）
48. I’m not sure whether I can gain any profit from the investment, so I can’t make a(n) ________ promise to help you.
A) exact
B) defined
C) definite
D) sure（C）
49. I have kept that portrait ________ I can see it every day, as it always reminds me of my university days in London.
A) which
B) where
C) whether
D) when（B）
50. The sports meet, originally due to be held last Friday, was finally ________ because of the bad weather.
A) set off
B) broken off
C) worn off
D) called off（D）
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