1. I didn't see what he was doing. 2. We were driving home from the country when we saw the accident. 3. It was very noisy in the room. I didn't hear what he was saying. 4. We were walking in silence for some time, then he spoke. 5. It was growing dark, so we returned inside the house. 6. The burglars robbed the bank and drove away. 7. She was extremely extravagant. She always bought new clothes. 8. While Arthur was buying tea, the train left. 9. When I arrived, Lucy was already waiting for me. She was wearing a new hat and looked very pretty. 10. I didn't mean to hurt you. I was just joking. 11. We were just talking about her when she suddenly came in. 12. They quarrelled while they were trying to find a compromise. 13. I waited for him for twenty minutes yesterday. 14. This time yesterday I was watering vegetables in my garden. It suddenly began to rain and I naturally stopped working and went inside the house. 15. I came up to her to ask something and saw that she was crying. 16. Mary carried an umbrella as it was raining heavily. 17. I was reading in bed last night when I heard a strange noise. Someone was trying to get into the house. 18. While I was swimming someone stole my clothes and I walked home in my bathing suit. 19. Why did you wake me up ? I was having such a wonderful dream! 20. We suddenly realized that we were travelling in the wrong direction.