我不确定客户会问什么，所以只能见机行事了。

I'm not sure what the client will ask, so I'll just ___play ___it ___by ___ear.

在去面试的路上，她决定随机应变。

On the way to the interview, she decided to ___play ___it ___by ___ear.

我们没有预订任何酒店；打算到时候再看情况。

We didn't book any hotels; we're going to ___play ___it ___by ___ear.