◎ 题干
Have you noticed the problem ___ he is now in low spirit ? ____ come?
A.where, What B.that, HowC.in which, ForD.what, As
◎ 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“Have you noticed the problem ___ he is now in low spirit ? ____ come?A.where, What B.that, HowC.in which, ForD.what, As…”主要考查了你对  【状语从句】【限制性定语从句】【主语从句】【同位语从句】  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。