动名词的完成式的动作发生在谓语动词的动作之前。
【例如】
I apologize forshavingsmade such a terrible mistake.I regret notshavingstold her the truth.The man in the corner confessed to ____a lie to the manager of the company. (CET-4 1997,6)
A) have told
B) be told
C) being told
D)shavingstold
confess to接动名词作宾语，而且根据句意，说谎的动作发生在承认之前，因此选择动名词的完成式，答案为D.