Task A.
1. My daughter WAS PLAYING while I WAS CLEANING the kitchen.
2. Bill and I WERE WASHING the car while Tom WAS WORKING in the garden.
3. When I WAS SKIING I BROKE my leg.
4. Martin WAS SLEEPING while his parents WERE WATCHING TV.
5. We WERE HAVING picnic when it STARTED to rain.
6. When he SAW the UFO he RAN home and CALLED his friend.
Task B.
1. Mike a) got a new bike last week.
2. While they b) were driving to the airport, they heard an explosion.
3. She a) opened the window and looked out.
4. I b) saw her yesterday at 7 am at the bus stop.
5. When I heard the doorbell I a) ran downstairs.
6. We b) were talking about the film while we were walking to the stop.
7. Students a) were writing the test when their teacher fell asleep.