I couldn't help when I heard the joke. A. being laughed B. laughing C. to be laughing D. to laugh 【查看更多】

 

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I couldn't help _____ when I heard the joke.

     A. being laughed         B. laughing           C. to be laughing      D. to laugh

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I couldn't help _____ when I heard the joke.

A．being laughed

B．laughing

C．to be laughing

D．to laugh

 

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