◎ 题干
---You were brave enough to raise objections 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n多题专家分析,试题“---You were brave enough to raise objections at the meeting.---Well, now I regret ____ that. A. to do b. to be doing C. to have done D. 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。