◎ 题干
________ spared to ensure success
A.No pains were B.No pain was C.Not pains were D.Not pain was
◎ 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“________ spared to ensure successA.No pains wereB.No pain wasC.Not pains wereD.Not pain was…”主要考查了你对  【可数名词及其单复数】【动名词】【表语从句】【缩写与简写】  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。