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    Unless to speak, you should remain silent at the conference. A. invited B. inviting C. being invited D. having invited 【查看更多】

     

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    Unless ____ to speak,  you should remain silent at the conference.

    A invited         B inviting           C being invited    D having invited

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    Unless ________ to speak, you should remain silent at the conference

     A. invited         B. inviting      C. being invited    D. having invited

    6.____,the experiment will be successful.

     

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    Unless ________ to speak,you should remain silent at the conference.    
    [      ]
    A. invited    
    B. inviting      
    C. being invited      
    D. having invited

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    Unless _____ to speak, you should remain silent at the conference.

    [     ]

    A. invited
    B. inviting
    C. being invited
    D. having invited

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    Unless _____ to speak, you should remain silent at the conference.

      A. invited                        B. inviting                            C. being invited               D. having invited

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