Complete sentences 1-8 using the Past Continuous or the Past Simple

1. He was driving very fast when ...
2. He heard the good news while he ...
3. They were travelling to the airport when ...
4. She was relaxing in a yoga class when ...
5. While they were having lunch, ...
6. She injured her back while ...
7. I was doing some shopping when ...
8. When we last talked to him, he ...