School is over at four every day.

学校每天四点钟放学。

I will go home after school is over.

放学后，我就回家了。

Children return home when school is over.

孩子们一放学就回了家。

Please go that way. The school is over there.

请往那边走，学校在那边。

Must I finish the work before school is over?

放学前我必须完成作业吗？