Réponse:

I questionned the receptionist of the hotel and she was answering a phone call at the reception desk. She calmly leaved the building after that.

The chief and the manager were discussing the menu in the kitchen, then they ringed the fire alarm.

Johnny, the waiter was cleaning up the dining room, then calmly leaved the building.

The Gardiner family was watching a TV series in room 103, then freaked out and jumped out the window a few seconds later they finished their TV show.

Finally Ms. Law was playing in the billiards room and dived under the desk