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As we all know, it’s not polite to keep others _____ for a l

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As we all know, it’s not polite to keep others _____ for a long time.
A.wait B.waited C.to wait D.waiting
As we all know, it’s not polite to keep others _____ for a l
D

考查点:固定短语的用法。 解题思路:固定短语keep sb. doing sth.意为“使某人持续不停的干某事”,句意为“众所周知,让别人等很长时间是不礼貌的”,故答案选D;
【易错题】keep sb. doing sth. 表示“是某人继续不停的干某事”,常与make sb. do sth.(“使某人做某事”)混淆。