1. Не (to sit) in a cafe, when I (to see) him. 2. My friend (to talk) to the teacher, when I (to see) him. 3.When the

1. He was sitting in a cafe when I saw him.2. My friend was talking to the teacher when I saw him.3. When the phone rang, they were having dinner.4. The boy fell and hurt himself while he was riding his bicycle.5. She was waiting for her sister when I saw her.6. When the pupils heard the bell, they got up and left.7. When I went out, the sun was shining.8. While she was playing the piano I was writing a letter.9. He was going to the University, when I met her.