◎ 题干
I always forget some news . I am very upset. and don' t know  _______ .
A. how  to do.     B. when to do.     C. what to do .
◎ 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 always forget some news . I am very upset. and don' t know _______ . A. how to do.B. when to do. C. what to do .…”主要考查了你对  【不定式】【分词】【动名词】  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。