18 A : Would you like something to drink?
　　　B : Do you have any orange juice?
　　　A : Sure. ( )
　　　B : Thanks very much.
　　　① What do you fancy?　② That's the one.　③ Give me a break.　④ Here you are.

19 A : What time do you come to the office every day?
　　　B : ( )
　　　① I rely on you.　② Thanks anyway.　③ It depends.　④ I apologize.

20 A : Don't eat any more, or you'll gain weight.
　　　B : I know, but ( ). I love ice cream too much!
　　　① I'm on a diet　② I can't eat any more　③ I can't help it　④ I'm putting on so much weight