were sleeping, slept
Gli uomini dormivano profondamente dopo la vedetta.
The men were fast asleep after the lookout.
— La corazzata Potëmkin (1925)
Mentre il professore stava insegnando, gli studenti dormivano.
While the professor was teaching, the students were sleeping.
Mentre la professoressa stava insegnando, gli studenti dormivano.
While the teacher was teaching, the students were sleeping.