from,it,I,home,school,is,come,when,raining(.)连词成句怎么连?

问题描述:

from,it,I,home,school,is,come,when,raining(.)连词成句
怎么连?

It is raining when I come home from school.

when i come home from school ,it is rainning,
加上时态变化的话,就是:
when i came home from school ,it was rainning,