◎ 题干
—You were brave enough to raise objection at the meeting.
—Well, now I regret ________ that.
A.to do B.to be doing
C.to have done D.having done
◎ 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“ —You were brave enough to raise objection at the meeting. —Well, now I regret ________ that.A.to doB.to be doingC.to have doneD.having done…”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。