They don't ask how much someone paid for something.
他们不问别人买某个东西要花多少钱。
So far I have been learning about China.
到止前我止,我一直都在研究中国的事情。
I even went out at midnight with a torch and noted with satisfaction (and surprise) that the ants were still swarming around the sticky tape without being able to do anything about it.