1. We …. (go) dancing every weekend when we were young. 2. Bob … (dance) when he fell and hurt his leg. 3. Tim … (cook) dinner when his dad … (come) home from work. 4. I … (do) shopping when I met Tom. 5. Peter … (watch) TV while Ann … (play) computer games. 6. Robin … (sing) in the school choir twenty years ago. 7. Why ……….… (you/laugh) during the class yesterday? 8. Mr. Green … (arrive) at the office and … (turn on) the computer. 9. …… (you/study) hard when you were at university? 10. She … (sleep) at 9 o’clock in the morning.​