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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38.[2003春季上海] Unless ________ to speak, you should remain silent at the conference.

A. invited              B. inviting     

C. being invited              D. having invited

 

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38.[2003春季上海] Unless ________ to speak, you should remain silent at the conference.

A. invited              B. inviting     

C. being invited              D. having invited

 

查看答案和解析>>


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