1. I was having a dinner when the lights went out
2. Dad was driving while Mum was looking at the map
3. They were walking in the park when the storm broke.
4/ She was cooking when she burnt (можно burned) her finger
5. When they (had) got up this morning it was raining
6. James was watching TV while Sally was reading a book
7. While Sam was playing, his mother was making lunch
8. Grandma was sitting in the garden when we came home
9. Ron was sleeping when someone knocked on the door
10. They was talking when the boss came
11. The dog was eating a bone while the cat was chasing a mouse
12. Dad hurt his finger while he was working in the garden