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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 【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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