1. I played computer games yesterday. 2. He was playing computer games from two till three yesterday. 3. What was Nick doing when you came to his place? 4. What were you doing when I rang you up? 5. What did he do yesterday? - He was reading a book. 6. What was he doing the whole evening yesterday? - He was playing the piano. 7. When I came into the kitchen mother was cooking. 8. I went to the cinema yesterday. 9. I was not writing a letter to my friend the day before yesterday. 10. Last summer we were in the country.
