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    A . They usually spend two hours their homework every day. A . do B. to do C. doing 【查看更多】

     

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    They usually spend two hours _______ their homework every day.
    A. do            B doing             C to do

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    They usually spend two hours _______ their homework every day.

    A. do            B doing             C to do

     

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    They usually spend two hours _______ their homework every day.
    A. do            B doing             C to do

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    They usually spend two hours ______ their homework every day.      
    [     ]
    A. do            
    B. doing            
    C. to do

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    They usually spend two hours _______ their homework every day.
    A. do            B doing             C to do

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