Is this seat taken?
No, have a seat.
No, you may have a seat.
Yes,It is, I‘m sorry.
This seat is not taken.
May I open the window?
May I go?
May I use your car?
Is this seat taken?
No, have a seat.
No, you may have a seat.
Yes,it is, I‘m sorry
May I go?
May I use your car?
原文：http://7883830.blog.51cto.com/7873830/1624042