-Robert is indeed a wise man. -Oh.yes.How often I have regretted his advice! A．t
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—Robert is indeed a wise man.
—Oh，yes.How often I have regretted ______ his advice!
A．to take B．taking C．not to take D．not taking
试题答案
D
解析:
regret doing sth.“后悔做过某事”；regret to do sth.“抱歉要做某事”。由题干可知，要用D项表示“对没接受建议而感到后悔”。