我们明天什么时候必须出发去车站？

What time will we have to ___set ___off for the station tomorrow?

他们刚刚出发去环游世界巡航。

They've just ___set ___off on a round-the-world cruise.

我们五点钟出发回家。

We ___set ___off for home at 5 o'clock.