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    ( ) When you your teeth, Billy? Just now. A. do, brush B. have, brushing C. did, brush D. was, brushing 【查看更多】

     

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     — When _________ you________ your teeth, Billy?

    —Just now.

        A. do; brush      B. have; brushed

    C. did; brush     D. was: brushing

     

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