was ...ing
Un mapache se estaba robando el pescado.
A raccoon was stealing the fish.
No sé cómo Matias no veía en lo que se estaba metiendo.
I don't know how Matias didn't see what he was getting himself into.
— Tropa de Élite (2007)
Yanni se estaba aguantando las ganas de orinar.
Yanni was holding back the urge to urinate.
Layla se estaba yendo a trabajar.
Layla was going to work.
Comprar lona para velas se estaba volviendo un problema serio.
Buying canvas for the sails was becoming a serious problem.
It was getting dark.