When he first came home he wouldn't say anything about what he'd been doing.

刚回到家时，他对自己一直在做的事只字也不愿提。

《柯林斯英汉双解大词典》

He told the police that he had thought honestly about the ethics of what he was doing.

他告诉警察他曾真诚地考虑过他所作所为依据的行为准则。

《柯林斯英汉双解大词典》

I was honest about what I was doing.

我对我所做的一切毫不隐瞒。

《柯林斯英汉双解大词典》

"We also owe it to every single one of them to ask the difficult questions about what we are doing in Afghanistan.

VOA: standard.2009.10.14

I'm not going to do it for you, but what would I think about doing when I change the code?

要改变代码应该做什么呢？,我不会帮你们做这些,但是我在改编代码的时候会想什么呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

So I was reading Media, and I have to write an essay about it. So that's what I was doing.

我在读与媒介有关的内容，需要写一篇有关的论文。那是我之前在做的。

沟通很重要 - SpeakingMax英语口语达人

What about doing the same for cars and trucks?

FORBES: Magazine Article

But what about doing business directly with the Government?

FORBES: Shouldn't My Tech Business Seek Government Contracts?

What about doing some old-fashioned self-introspection for a change?

FORBES: What We Humans Value: The Indulgence of Being Loved