There was none.He was angry, but did not know what to do.

VOA: special.2010.01.09

Well, I actually did not know what I wanted to do coming into Berkeley.

嗯，实际上，来伯克利的时候，我并不知道自己想做什么。

伯克利的课程计划 - SpeakingMax英语口语达人

Paul's father did not know what to do with him.

VOA: special.2009.04.04