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【题目】Unless______ to speak, you should remain silent at the conference.

A. invited B. inviting

C. being invited D. having invited

【答案】A

【解析】

试题分析:考查非谓语动词。原句意思是,除非你被邀请发言,否则你应该在会议上保持安静。连词后可以直接加现在或过去分词,由主动被动决定.由于"你"是被邀请的,所以应该用过去分词,故选A。

【名师点评】连词后可以直接加现在或过去分词,由主动被动决定.由于"你"是被邀请的,所以应该用过去分词。

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