◎ 题干
I should apologize to you for failing to visit you last week, but I've been very busy_____ the past few months.
A.sinceB.beforeC.amongD.over
◎ 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“I should apologize to you for failing to visit you last week, but I've been very busy_____ the past few months.A.sinceB.beforeC.amongD.over…”主要考查了你对  【介词和介词短语】  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。