1)Why don't you make one?
I'd like to buy my friend an enormous birthday cake.
2)Why Don't you borrow a book about it from the library?
I'd like to find out about film making
3)Why don't you go for run every day?
I'd like to win a race in the school sports.
4)Why Don't you join a gymnastics club?
I'd like to be a stunt artist.