Unless ________ to speak, you should remain silent at the conference.A.invitedB.
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
考查非谓语动词作状语。You和invite构成被动关系,所以使用过去分词。句意:如果你没有被邀请发言,在会议上你应该保持沉默。 |
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