Question

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 phone (to ring), they (to have) dinner. 4.The boy (to fall) and (to hurt) himself while he (to ride) his bicycle. 5. She (to wait) for her sister, when I (to see) her. 6. When the pupils (to hear) the bell, they (to get up) and (to leave). 7. When I (to go) out, the sun (to shine). 8. While she (to play) the piano, I (to write) a letter. 9. He (to go) to the University, when I (to meet) her. 10. Our friends (to discuss) something when we (to interrupt) them. 11. My mother (to watch) TV,

Answer 1

1 was sitting, saw
2 was talking, saw
3 rang, were having
4 fell, hurt, was riding
5 was waiting, saw
6 heard, got up, left
7 went, was shining
8 was playing, was writing
9 was going, met
10 were discussing, interrupted
11 was watching

Answer 2

1. I wasn't 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. 10. Our friends were discussing something when we interrupted them. 11. My mother was watching TV.