Когда мы приблизились к выходу, мы

Когда мы приблизились к выходу, мы услышали странные звуки сзади нас. Мы решили вернуться и посмотреть что происходит. В конце длинного коридора мы заметили нечто белое и огромное.

Results (English) 1:

When we approached the exit, we heard a strange noise behind us. We decided to go back and see what happens. At the end of a long corridor, we noticed something white and huge.

Results (English) 2:

As we approached the door, we heard a strange sound behind us. We decided to go back and see what happens. At the end of the long corridor we noticed something white and enormous.

Results (English) 3:

when we came out, we heard a strange sound from behind us. we decided to go back and see what happens. at the end of a long corridor, we noticed something white and very much.