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    11．--Hello! May I speak to Mr. Smith? -- .please．He's answering another call right now． A．Go on B．Come on C．Keep on D．Hold on 【查看更多】

     

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    --Hello! May I speak to Mr. Smith?

    --        ，please．He's answering another call right now．

    A．Go on                  B．Come on              C．Keep on                 D．Hold on

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