1. I **was walking** down the street when it began to rain.
2. At this time last year, I **was attending** an English course.
3. Jim **was standing** under the tree when he heard an explosion.
4. The boy fell and hurt himself while he **was riding** a bicycle.
5. When we met them last year, they **were living** in Santiago.
6. The tourist lost his camera while he **was walking** around the city.
7. The lorry **was going** very fast when it hit our car.
8. While I **was studying** in my room, my roommates **were having** a party in the other room.
9. Mary and I **were dancing** in the house when the telephone rang.
10. We **were sitting** in the café when they saw us.