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题目
题型:不详难度:来源:
Unless ________ to answer questions, the pupils won"t talk in Mrs Smith"s class.
A.askingB.asked
C.being askedD.having asked

答案
B
解析
B 连词省略句。该句中的unless引导的条件状语从句的主语是the pupils,与主句的主语相同,the pupils与ask之间是被动关系,应该使用过去分词的形式。故B正确。
核心考点
试题【 Unless ________ to answer questions, the pupils won"t talk in Mrs Smith"s class】;主要考察你对现在分词等知识点的理解。[详细]
举一反三
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