What did you do in the net bar?

你通宵在网吧做什么？

He used to go to net bar.

他过去常常进网吧。

May:What do you think of that net bar?

你觉得那个网吧怎么样？

What did you do in the net bar all night?

你通宵在网吧都做什么了？

I am concerned, the net bar has been closed.

就我所知，那个网吧已经被关闭了。