1. The wind was blowing when we were in the open sea.2. She watched the children play.3. They were leaving when she arrived.4. I was traveling abroad when i got his letter.5. She was driving when she saw me in the street.6. It was raining all the evening yesterday.7. When I entered the classroom, everybody was sitting at the desks.8. My friend was working at 1 o'clock yesterday.9. We were having breakfast when the postman came.10. Mary got ready for the exam while i was reading.