题目内容
【题目】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
【答案】C
【解析】句意:在真正的赛马大赛中,每个人都已经提前研究了赛马的形式。behind time无此结构;in progress 在进行中;in advance提前,预先;in time及时。
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