---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 doB.to be doingC.to have doneD.having done
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D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。