Ex.3
A X: Hi Jane, could you lend me your bike helmet, please?
Y: Sorry, I can't. I've left it at home.
X: Oh, well, can I come to your house after school to get it then?
Y: OK, no problem.
B X: Excuse me, may I get my bag from the cloakroom, please?
Y: Yes, you may, but why do you need your bag?
X: It's got my calculator in it.
Y: OK, fine. But hurry up!
