—Your brother was brave enough to tell the truth in public.-Yes and he will never regr

问题补充：

—Your brother was brave enough to tell the truth in public.

---Yes, and he will never regret that. I admire him so much.

A. to do

B. to be doing

C. to have done

D. having done

答案：

A. to do

B. to be doing

C. to have done

(答案→)D. having done

解析：固定短语。Regret to do sth遗憾要做某事；regret doing sth/having done sth遗憾做了某事;结合句意可知D正确。句意：—能把真相公司公众你的兄弟真是相当勇敢。—是的他永远不会遗憾那样做。我非常钦佩他。