◎ 题干
It isn’t clear_____ is to blame.We need to find a solution to the problem first.
A.who is it thatB.who it is thatC.it is who thatD.that who it is
◎ 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“It isn’t clear_____ is to blame.We need to find a solution to the problem first.A.who is it thatB.who it is thatC.it is who thatD.that who it is…”主要考查了你对  【强调句】  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。