◎ 题干
—Robert is indeed a wise man.
—Oh, yes.  How I have regretted ____ __his advice?
A.to takeB.taking C.not to takeD.not taking
◎ 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“—Robert is indeed a wise man.—Oh, yes. How I have regretted ____ __his advice?A.to takeB.taking C.not to takeD.not taking…”主要考查了你对  【现在分词的被动式】【现在分词】【不定式的被动式】【过去分词】  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。