17)
A: I'll get the check.
B: No, let me pay this time.
A: No, I insist.
B: Well, thank you very much.
A:我来付帐。
B:不，这次由我付。
A:不，还是我来。
B:好吧，那就谢谢你啦?

18)
A: This lunch is on me today,
B: I think you got it last time.
A: It's my pleasure.
B: That's very nice of you.
A:今天这顿饭算我请客。
B:我记得上回也是你请的。
A:我请得心里高兴。
B:既然这样，那就多谢了。

19)
A: Shall we split the check.
B: Why don't you let me pick it up.
A: Oh, that's not necessary.
B: I know it's not necessary. I want to do it.
A:大家分摊吧？
B:就让我来付帐好了。
A:啊，不必这样。
B:我知道不必这样，可是我愿付?/span>

20)
A: I really enjoyed the lunch.
B: Yes, let's do it again real soon.
A: I'll be back in town next month.
B: Good, I'll invite you out when you're here.
A:这顿饭我吃得好高兴。
B:是啊，让我们不久再一起用餐吧。
A:我下个月会再回这里来。
B:好极了，等你来的时候，请再接受我的招待。