◎ 题干
—I must apologize for ______ ahead of time.
—That’s all right. 
A.not letting you to know B.not letting you know
C.letting you know not D.letting not you know
◎ 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 must apologize for ______ ahead of time. —That’s all right.A.not letting you to know B.not letting you knowC.letting you know not D.letting not you know…”主要考查了你对  【并列连词】  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。