题目

 It was such a funny show that people couldn't help ____________again and again. A. laugh        B. to laugh      C. laughing 答案：C 【解析】选C。考查固定搭配。can’t help doing sth. 意为“禁不住做某事”，此处句意为：这是一场如此有趣的表演,以至于人们忍不住笑了一次又一次。故选C。

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