◎ 题干
How do you guess ________?
A.did they finish the work within so short a time
B.they finished the work within so short a time
C.had they finished the work within so short a time
D.will they finish the work within so short a time
◎ 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“How do you guess ________?A.did they finish the work within so short a timeB.they finished the work within so short a timeC.had they finished the work within so…”主要考查了你对  【限制性定语从句】【非限制性定语从句】  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。