◎ 题干
. Will you please keep quiet now? You shouldn’t talk until ________ to.
A.askingB.having asked C.to askD.asked
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“. Will you please keep quiet now? You shouldn’t talk until ________ to.A.askingB.having askedC.to askD.asked…”主要考查了你对  【全部倒装】【部分倒装】【省略句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。