题目内容
At proper horse races everyone has already studied the form of the horse ______.
| A.behind time | B.in progress | C.in advance | D.in time |
C
考查词组辨析:. in progress 在进行中, in advance提前, in time迟早,及时,句意是:在赛马比赛中,每个人已经提前对马的情况做了研究。选C。
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