What can I do for you?
我能为您做点什么？
I just don't know what to do for the best.
我就是弄不清做什么才好。
It's amazing what some people will do for gain.
有的.人为一己之利而干出的事令人惊讶。
It's surprising what people will do for money.
人为了钱什么干不出来，想想真令人愕然。
What did she do for a living?
她过去干哪一行为生？
We need some new curtains, but these will do for the meanwhile.
我们需要一些新的窗帘，但这些暂时还可以用。
Are you having a big do for your birthday?
你打算举行大型生日宴会吗？