1. Harry … (ride) his bicycle while Mary was skateboarding. 2. I … (not read) when you came in. 3. She … (cook) yesterday. 4. She … (write) a letter when the lights went out. 5. Steve … (get dressed), had breakfast and then went to work. 6. When I was a teenager I … (play) in the school basketball team. 7. What he … (do) when I came? 8. David … (ride) his bicycle while Kevin was skateboarding. 9. Dad … (do) the washing up before mum came home. 10. Pete … (water) flowers in the garden yesterday. 11. When my sister … (come in), I … (do) my lessons. 12. We … (go) on holiday in July. 13. The policeman asked, “What … (you/do) at the time of the robbery?” 14. When I was young, I … (play) in the school football team. 15. She … (cook) at three o'clock yesterday