◎ 题干
---Do you know how long ________?  ----I’m sorry I don’t know.
A.he has come hereB.has he been married
C.Tom has bought the carD.his uncle has been abroad
◎ 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“---Do you know how long ________? ----I’m sorry I don’t know.A.he has come hereB.has he been marriedC.Tom has bought the carD.his uncle has been abroad…”主要考查了你对  【宾语从句】【状语从句】  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。