Jim: Oh, are you going out
Tony: Yes, I'm going for a walk. ______________________
Jim: Yes, as a matter of fact, I need some stamps.
Tony: Okay, then. I'll drop in at the post office for you on my way back.
A．Aren't you going shopping B．Shall I come back in about an hour C．Do you want to come with me D．Can I pick up anything for you