◎ 题干
Has all that ____ without delay ____ yet?
A.can do…being done
B.done…been done
C.ought to be done…to do
D.should be done…been 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 all that ____ without delay ____ yet?A.can do…being doneB.done…been doneC.ought to be done…to doD.should be done…been done…”主要考查了你对  【现在分词的被动式】【现在分词】【不定式的被动式】【过去分词】  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。