go|goes|going|gone|went

开始下雨了，所以我回去拿我的钥匙。

It had started to rain so I ___went back for my keys.

太阳下山时，天空变成橙色。

As the sun ___goes down, the sky turns orange.

我到处找我的钥匙，但它们已经不见了。

I looked for my keys everywhere, but they had ___gone.

我乘公共汽车上学。

I ___go to school by bus.

我们现在正回家。

We are ___going home now.