Unit 148 Hurry and get changed!快去換衣服!

Unit 148 Hurry and get changed!快去換衣服!
    Hurry, and get changed.
    What for?
    Hurry up!
    Hurry and get changed.
    What for?
    Why?
    You should study.
    What for? Why?
    Why are you going to the post office?
    What are you going to the post office for?
    John, could you lend me 20 dollars?
    What for?