2016年12月英語四六級考試將在12月17日舉行，為了幫助大家更好地複習語法，以下是yjbys網小編整理的關於英語四級語法精選練習，供大家備考。
41. They ________ to enter the building by the back door; however, the front door was locked.
A) weren’t supposed B) wouldn’t be supposed
C) were supposed D) would be supposed
42. ________ human behavior may be caused by eating substances that upset the delicate chemical balance in the brain.
A) Deliberate B) Consistent
C) Primitive D) Abnormal
43. The captured criminals were ________ in chains through the streets.
A) exhibited
B) displayed
C) paraded
D) revealed
44. In reading stories we anticipate what is to come ________ on our memory of what has gone before.
A) based
B) basing
C) to base
D) to be based
45. The world’s governments have done ________ nothing to combat the threat of nuclear accidents.
A) inherently
B) vitally
C) virtually
D) identically
46. I guess Jones didn’t have a chance to win the election. Almost all of the people in the city voted for his ________.
A) candidate
B) opponent
C) alternative
D) participant
47. The background music in an assembly line is designed ________.
A) not being listened to
B) not to be listened to
C) being not listened to
D) to be not listened to
48. Teaching students of threshold level is hard work but the effort is very ________.
A) precious
B) rewarding
C) worth
D) challenging
49. The boy students in this school are nearly ________ as the girl students to say they intend to get a college degree in business.
A) as likely twice
B) likely as twice
C) as twice likely
D) twice as likely
50. The explorer lost his way so he climbed to the top of the hill to ________ himself.
A) spot
B) locate
C) place
D) situate
41. A 42. D 43. C 44. A 45. C
46. B 47. C 48. B 49. D 50. B
