He could not help ------- at the joke.

问题描述：

He could not help _______ at the joke.
A.laugh
B.laughing
C.to laugh
D.laughed
1个回答 分类：英语 2014-12-12

问题解答：

我来补答
to laugh.cannot help to do sth情不自禁做某事
 
 
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