—Youwerebraveenoughtoraiseobjectionsatthemeeting.
—Well,nowIregret________that.
D
regret 后所跟动词有 to do 与 doing 两种形式，不定式表示“为做某事而遗憾”， doing 表示“为做过某事而后悔”。“ having done ”则更强调动作已发生而无法挽回。
名词解释：copyright
名词解释：offer
Heboughtahouseforhischildren________
名词解释：preferredstock
You’dbetterleavethings________ifyoudon’tknowhowtodealwiththem