1. I ....................(live) in Brazil at this time, Brazil.
2. I....................(do) my homework at 10 o’clock last night.
3. Tom ....................(cook) the dinner at 7 o’clock yesterday.
4. Sally ....................(eat) dinner last night when someone ....................(knock) on
the door.
5. I ....................(study) when Fred (come) yesterday.
6. While I ....................(study) last night, Fred ....................(drop) by to visit me.
7. My roommate’s parents ....................(call) him last night while we
................................ (watch) TV.
8. When he ....................(come) home, I ....................(talk) to my mother on the
phone.
9. I ....................(read) when the lights ....................(go out)
10. While she ....................(watch) TV, he .................... (do) the housework.
11. I....................(have) dinner when Roger ....................(phone).
12. You didn’t pick me up yesterday. What ...................you (do) then?
13. He....................(walk) in the park when the dog ....................(chase) him.

14. While you ....................(clean) the house, your dog ....................(make) the
house dirty.
15. They ....................(play) chess when their house....................(be) on fire.