_______ we are doing now has never been done before.
A.That
B.What
C.Which
D.Whether
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◎ 解析
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◎ 知识点
根据n多题专家分析,试题“_______ we are doing now has never been done before.A.ThatB.WhatC.WhichD.Whether…”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。
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