—Youwerebraveenoughtoraiseobjectionsatthemeeting.
—Well,nowIregret________that.
A、todoD
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。
Thewoundedsoldierswouldrecoverquicklyiftheywerewell________.
Therearemanysalesthisseason,duringwhichstoreswilllowertheir_______prices.
—Youwerebraveenoughtoraiseobjectionsatthemeeting.
—Well,nowIregret________that.
Sofarscientistshaveonlyacquired________understandingofthephysicalprocessesthatcauseearthquakes.
You’dbetterleavethings________ifyoudon’tknowhowtodealwiththem
