1. I (go) was going down the street when it began to rain.
2. At this time last year, I (attend) was attending an English course.
3. Jim (stand) was standing under the tree when he heard an explosion.
4. The boy fell and hurt himself while he (ride) was riding a bicycle.
5. When we met them last year, they (live) lived in Santiago.
6. The tourist lost his camera while he (walk) was walking around the city.
7. The lorry (go) was going very fast when it hit our car.
8. While I (study) was studying in my room, my roommate (have) was having a party in the other room.
9. We (sit) were sitting in the café when they saw us.
10. I (call) called Mr. Wilson at 9 last night, but he (not be) wasn't at home. He (study) was studying at the library.