C: Is this cash or check?
A: Cash, please.
C: Do you have smaller bills?
A: This is all I have.
C: Well, then, we have a problem. We don't have changes for you.

C: 要付现金或支票？
A: 付现金。
C: 你有小钞吗？
A: 我只有这张钞票。
C: 哦，那我们有麻烦了。我们没有零钱可找你。

重点解说：

★ bill「钞票」a ten-dollar bill「一张十元的钞票」

★ change「零钱」Keep the change.「钱不用找了。」