They have done a lot of work.

他们做了大量的工作。

youdao

She must have done a lot of work on it.

她一定在这上面花了不少功夫。

youdao

I have done a lot of work for our class.

我已做了大量的工作为我们的课堂。

youdao

are basically people that have done a lot of bodies of work.

基本上都是做出了很多成就的人。

街头邂逅明星 - SpeakingMax英语口语达人

However, the states themselves have done a lot of work and planning.

WHITEHOUSE: Press Briefing

People have done a lot of work trying to understand business in terms of behavior and psychology, but Chopra goes deeper, applying the rules of biology, neuroscience (and maybe a little philosophy) to corporate leadership.

FORBES: Deepak Chopra on the Science - and Soul - of Business

All these folks have just done a lot of work to make this day possible.

WHITEHOUSE: President Obama on America's Great Outdoors Initiative