◎ 题干
When his dad died, he felt          his world had turned upside – down.
A.in case B.as if C.so that D.even though
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“When his dad died, he felt his world had turned upside – down.A.in caseB.as ifC.so thatD.even though…”主要考查了你对  【可数名词及其单复数】【动名词】【表语从句】【缩写与简写】  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。