例句：
Did you take your medicine?
你吃过药了吗？
Did you see what happened?
你看见出什么事了吗？
Did he answer your letter?
他回复你的信了吗？
What have I done to deserve this?
我做了什么事应该得到这种待遇呢？
She got done for speeding.
她因超速行驶而受到处罚。
Sit there and wait till I've done.
坐在那儿等到我做完。