Anybody want to make a guess?

谁想猜一下？

You want to make a guess?

你想猜猜看吗？

Can you make a guess at her occupation?

你能猜出她的职业吗？

What I can do here is only to make a guess.

我在这里只能做一个猜测。

Make a guess.

猜一猜吧。