на лестничной площадке было четыре

на лестничной площадке было четыре двери я не знала которая из них была дверь моих друзей

Результаты (английский) 1:

the staircase was a four door, I didn't know which of them was the door of my friends

Результаты (английский) 2:

on the landing was a four-door, I did not know which of them was the door to my friends

Результаты (английский) 3:

on the landing was a four door, i don't know which of them was the door of my friends