4.
They were about to leave (ИЛИ they were going to leave) when an unexpected wind gust
prevented them from opening the door.
5.
We have never had a desire of remaining here forever.
6.
All we could do was following (ИЛИ watching) the events (ИЛИ developments)
7.
Realizing your mistakes is the first step to changing your way of life.