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    I can’t send an e-mail. Could you show me it? A. doing B. to do C. what to do D. how to do 【查看更多】

     

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    I can't send an e-mail. Could you show me _____?
    [     ]
    A. what to doing
    B. how to do it
    C. what to do it
    D. how to doing

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