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    --- your homework yet? --- Not yet. I it. A. Have you done, am doing B. Did you do, am doing C. Have you done, did D. Did you do, did 【查看更多】

     

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    -- ________? your homework yet?

    -- Not yet. I _______ it.

    A. Have you done; am doing????????????? ????????????? ????????????? ? B. Did you do; am doing

    C. Have you done; did????????????? ????????????? ????????????? ????????????? ? D. Did you do; did

     

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     -- ________  your homework yet?

    -- Not yet. I _______ it.

    A. Have you done; am doing                          B. Did you do; am doing

    C. Have you done; did                                     D. Did you do; did

     

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    -- ________  your homework yet?
    -- Not yet. I _______ it.

    A．Have you done; am doing B．Did you do; am doing
    C．Have you done; did D．Did you do; did

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