was working
Yanni estaba trabajando.
Yanni was working.
Tom estaba trabajando como intérprete el verano pasado.
Tom was working as an interpreter last summer.
Porque su padre estaba trabajando allí.
Because his father was working there.
I was working there.
Él estaba trabajando en la oficina ayer por la tarde.
He was working in the office yesterday afternoon.
Él no estaba trabajando con ella.
He wasn't working with her.
Ella me dijo que estaba trabajando.
She told me she was working.