摘要： -You were brave enough to raise objectionsat the meeting. -Well, now I regret that. A. to do B. to be doing C. to have done D. having done [解析]选D.regret后接动名词表示“后悔做过某事 ,后接不定式时.表示“为要做的事表示遗憾或歉意 .

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