◎ 题干

. If law and order _____, neither the citizen nor his family is safe.
A.are not preservedB.is not preserved
C.were not preservedD.have not been preserved
◎ 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“. If law and order _____, neither the citizen nor his family is safe.A.are not preservedB.is not preserved C.were not preservedD.have not been preserved…”主要考查了你对  【主谓一致】  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。