1. I was sitting in a cafe when you called.
2. When you arrived at the party, we were dancing.
3. Jane was watching a film when she heard noise.
4. When I walked into the room, all students were working.
5. While I was driving a car, I didn't hit the wall.
6. When he left the house, it was snowing.
7. We were waiting on the platform when the train got to the station.
8. He was living in Russia when the Revolution started.
9. I was walking along the street when I broke my leg.
10. We didn't stand on a chair when our teacher came to a classroom.
11. I was doing my homework when my mom arrived.