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    --I so busily recently that I have no time to help you with your math. -- That's OK. I can manage it by myself. A. have been working B. worked C. was working D. had been working 【查看更多】

     

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    －I ________ so busily recently that I have no time to help you with your math．

    －That’s OK．I can manage it by myself．

    [　　]

    A．have been working

    B．worked

    C．was working

    D．had been working

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    --- I ______ so busily recently that I ______ no time to help you with your math.

    　--- That’s OK. I can manage it by myself.

    A.have been working; have

    B.have worked; had

    C.am working; will have

    D.had been working; had had

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    --- I ______ so busily recently that I ______ no time to help you with your math.

       --- That’s OK. I can manage it by myself.

    　 A. have been working; have

       B. have worked; had

       C. am working; will have

       D. had been working; had had

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    --- I ______ so busily recently that I ______ no time to help you with your math.

       --- That’s OK. I can manage it by myself.

    　 A. have been working; have

       B. have worked; had

       C. am working; will have

       D. had been working; had had

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    - I ______ so busily recently that I ______ no time to help you with your math.

    -- That’s OK. I can manage it by myself.

    A. have been working; have B. have worked; had

    C. am working; will have D. had been working; had had

     

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