单项选择题 A: I just can't stand this class any more!B: ______ It's required, and you have to sit in it in order to graduate.

单项选择题 A: We just came back from hoenix. And we had the best vacation is years.B: ______ I'm glad to hear it.

单项选择题 A: Daivd said he bought a new BMW for 5,000!B: ______ sounds pretty cheap to me!A: Well, that's what he said.