Поставьте глагол в PAST PROGRESSIVE: 1. What you (to do) when we rang you up? 2. The singer (to sing) very well at that

1. What were you doing when we rang you up? 2. The singer was singing very well at that moment. 3. The weather was bad and it was getting worse and worse. 4. Margaret was writing a letter the whole evening yesterday. 5. John and Olaf were not swimming in the river this time last year. 6. Who were you waiting for? 7. He was looking through the mail when the telephone rang. 8. They were going home when I met them. 9. The teacher and I did not talk about you the other day. 10. She was telling a very interesting story at that moment.