Question

【题目】—You were brave enough to shout at the meeting.

—Well, now I regret _____ that.

A. to do B. to be doing

C. to have done D. having done

Answer 1

【答案】D

【解析】regret to do sth. “遗憾做某事”，事情还未发生； regret doing sth. “后悔做过某事”，事情已经发生。句意：——在会上大声喊，你真勇敢。——现在我后悔那样做了。故D项符合题意。