Réponse :

bonjour

le 1er exercice je dois avoir plus d'infos

2)1. I was doing my homework when Peter arrived.

 2. When we were going to the disco, we saw a car accident.

 3. When they were sleeping, they heard a big noise.

 4. My brother was emptying the dishwasher when he broke a glass.

 5. My father was hoovering the house when my mom came back home.

 6. The hamster was eating when the cat jumped onto the cage.