1. We were playing volleyball with Mary when you called me.
2. When the teacher came in, they were studying English.
3. The baby was sleeping when the telephone rang.
4. As I was walking in the streets of Holland, I met an old friend of mine.
5. I lost my car keys.
6. I was looking for my purse when I dropped my credit card.
7. My uncle took me to the airport yesterday.
8. She was dancing when she hurt her ankle.
9. It was raining heavily when I got up.
10. I saw the thief while he was getting into my neighbor’s house.