I don't feel sorry for Carl. He knew the score, he knew what he had to do and couldn't do it.

我并不为卡尔感到难过。他了解实情，他知道他必须做什么，但又没能做成。

《柯林斯英汉双解大词典》

"I'd like to do an act in the show, but I don't know what to do," I told Mareya.

“我想在节目中表演，但我不知道要做什么。”我告诉玛瑞娅。

youdao

I don't know exactly what to do, but I can choose to do something.

我不知道该如何是好，但是我还是能选择去做某件事。

youdao

We leave you with "I Don't Know What To Do" from Pete Yorn and Scarlett Johansson.

VOA: special.2009.10.09

There are two possibilities. If the answer is yes, then I'm still looking for the answer, what do I want to do? Well, I don't have to do anything other than change the counter.

这就是一个测试，有两种可能的结果，如果结果为是的话，然后我就要继续找寻目标数,我该怎么做呢？好。

麻省理工公开课 - 计算机科学及编程导论课程节选

I don't really know what I do in my free time in London.

我真的不知道，在伦敦我没事的时候该干什么。

生活费很高 - SpeakingMax英语口语达人

At the same time, you know, I don't think of what I do - I don't do it in a hermetically sealed chamber.

NPR: Joe Henry Is a Still Driving Man

"This is an incredible opportunity for my city that I feel like I'm going to miss out if I don't do something, and yet what I do is not going to hit the mark, " he said.

CNN: Katrina red tape holds lessons for stimulus, mayors say

"I don't try and tell the Liberals what they should do and I don't think they should try and tell us what we should do, " she said.

BBC: Beckett warns Ashdown on PR