1. All the pupils were sitting at their desks, when the teacher came into the classroom.
2. Jane was walking in the park last Sunday when she met Chris.
3. I am leaving the house when it began raining yesterday.
4. We were at home and we were listening to music while Arnold was speaking on the phone.
5. When I was walking my dog, it began snowing.
6. While my sister was making tea, I was washing my cups.
7. We were driving in the car when we heard that noise.
8. The children were fed their cat when a big dog ran into the garden.
