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    29．--Mary.could you help me? --Wait a moment．I ． A．read a book B．did my homework C．was watching TV D．am cooking dinner 【查看更多】

     

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    --Mary，could you help me?

    --Wait a moment．I         ．

    A．read a book                                             B．did my homework

    C．was watching TV                                      D．am cooking dinner

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