Unless ___ to speak, you should remain silent at the conference.A．invitedB．invi
题型：不详难度：来源：
Unless ___ to speak, you should remain silent at the conference.| A．invited | B．inviting | C．being invited | D．having invited |
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答案
| A |
解析
试题分析：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。
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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