英语变句,I finished my homework last night.(强调时间)怎么变?

问题描述:

英语变句,I finished my homework last night.(强调时间)怎么变?

It was last night when I finished my homework.
一般陈述句改为强调句。

It was last night that I finished my homework.

改成强调句?
It is last night that I finished my homework.