—Robertisindeedawiseman.—Oh,yes.HowoftenIhaveregretted

问题详情：

—Robert is indeed a wise man.

—Oh, yes. Howoften I have regretted ________ his advice!

A．to take　　　       B．taking                       C．not to take　　　    D．not taking

【回答】

D

知识点：非谓语动词

题型：选择题