◎ 题干
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. ________each other for long , the two brothers decided to meet soon.
A.Not having seen B.Not seen C.Have not seen D.Not seeing
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“.. ________each other for long , the two brothers decided to meet soon.A.Not having seenB.Not seen C.Have not seenD.Not seeing…”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。