Мы услышали, как ночью сработала си

Мы услышали, как ночью сработала сигнализация, и увидели двух охранников, бежавших к входу в банк

Результаты (английский) 1:

We heard the alarm went off during the night and saw two guards who had fled to the entrance of the Bank

Результаты (английский) 2:

We heard the alarm went off during the night, and saw the two guards, who fled to the entrance to the bank

Результаты (английский) 3:

we heard last night the alarm went off, and saw the two guards who had fled to the entrance of the bank.