We have to get to the bank__ 5:30 because it will be closed then.A by B in C after D on

问题描述:

We have to get to the bank__ 5:30 because it will be closed then.A by B in C after D on
选哪个 为什么?

A by 在这里by是介词:在.之前
如:
We usually finish work by six o'clock.
我们通常在6点钟之前完成工作