1. I (fall) while I (skate) with some friends.
2. Mark (copy) his classmate's exam while the teacher (observe) him.
3. Cindy (go) to the doctor and he (give) her a medicine because she (be) ill.
4. When the scientist (analise) some fingerprints he suddenly (find) an interesting clue.
5. The secretary (phone) her boss to see if he (come) .
6. I (want) to go out this morning but when I (open) the door it (snow) so I (go in) to take an umbrella, my gloves and a scarf.
7. The firemen (extinguish) the fire and the doctors (cure) the casualties when the police (come) . Fortunately, nobody (be) [?] seriously injured, although at that time a lot of people (work) in the area.