◎ 题干
— You are brave enough to raise objections at the meeting.
— Well, now I regret ____ that.
A. not to do  
B. having done    
C. to have done  
D. not doing
◎ 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 are brave enough to raise objections at the meeting.__Well, now I regret______ that. [ ]A. not to do B. having doneC. to have done D. not doing…”主要考查了你对  【动名词的完成式】  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。