Past Progressive.

Explicacion:
Al Igual que al Present Progressive Le Agregas al Verbo ING.
Cuando Hablas en Pasado Cambia el Verbo To be.

I am-I was.
She is- She Was.
He is-He Was.
You are-You Were.
We Are-we Were.
They are-They Were.

Por Ejemplo:
She Was jumpING in the bed.
we Were closING the window.
I Was openING the door.