1. When I was walking home it began to rain
2. She was writing a letter at 10 o'clock last night
3. I was reading a book in bed while he was listening to music
4. We were going out last night
5. While I was taking a bath, she was using the computer
6. At 9 A.M yesterday, he was watching the cartoon on TV
7. When I was cooking, the light went out.
8. When he worked here, he was always making noise
9. He was planting trees in the garden at 4 pm yesterday.
10. Anne was riding her bike to school when Peter saw her yesterday.
