Anyone could be doing what I'm doing.

任何一个人都可以做我在做的事。

《柯林斯英汉双解大词典》

What can they be doing?

他们究竟在干些什么呢？

《牛津词典》

You can't be doing two things at once.

你不能同时做两件事。

《柯林斯英汉双解大词典》

Some people might not have firm plans yet for New Year's Eve, but others know exactly what they will be doing.

VOA: special.2009.12.28

Well, in some sense this is exactly what modernity might be seen to be doing to traditional English culture.

某种程度上这正是现代性,被认为的对传统英国文化所产生的影响。

耶鲁公开课 - 现代诗歌课程节选

or if you want to go in to the corporate side, which is the deal work which is what I'm going to be doing.

或者你想进商业领域，就是交易工作，我以后做的就是这个。

美国式对比英国式 - SpeakingMax英语口语达人

What is the SEC supposed to be doing while all of this is going on?

FORBES: Why Everybody's Jumping On The Accountants These Days

They're simply doing what they should be doing - supporting their own, fulfilling a political destiny.

NPR: What Will Be African-Americans' Political Destiny?

Being seen to be doing his job, and doing it well, is worth a thousand rallies.

BBC: Sandy steals spotlight from Romney