13. Я не смог навестить друга, поск

13. Я не смог навестить друга, поскольку не знал его адреса.

Результаты (английский) 1:

13. I have not been able to visit a friend because they do not know his address.

Результаты (английский) 2:

13. I could not visit each other, because they do not know his address.

Результаты (английский) 3:

13. i haven't been able to visit a friend, because you don't know his address.