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    --- Can I help you, sir? --- No, thank you. I . A. have served B. am being served C. can serve D. was served 【查看更多】

     

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    －Can I help you, sir?

    －No, thank you．I ________．

    [　　]

    A．have served

    B．am being served

    C．can serve

    D．was served

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