◎ 题干
I don't know _______  deal with this matter.

A. how
B. how to
C. what
D. what to
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“I don't know_______deal with this matter. [ ]A. how B. how to C. what D. what to…”主要考查了你对  【连接副词】【不定式】  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。