◎ 题干
  Has everything __   ___ can be done ___   ___?
A.what; done   B.that; been done
C.that; already doneD.what; already being done
◎ 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“ Has everything _____ can be done ______?A.what; doneB.that; been doneC.that; already doneD.what; already being done…”主要考查了你对  【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。