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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