Test . Past Simple or Past Continuous?

1. While I (listen) to the radio, the telephone (ring).
2. He (break) his leg when he (ski) in the Alps.
3. They (listen) to the orchestra when the pianist (become) ill.
4. Ann (play) the piano while Tom (paint) a picture.
5. We (see) an accident while we (wait) for the bus.
6. She (work) quietly at her desk when suddenly the door (open).
7. What you (read) at 6 o'clock on Sunday?
8. She (meet) Dan while she (work) in France?
9. My mom (work) in the garden when I (come) home?
10. How fast you (drive) when the police (stop) you?