Past Simple or Past Continuous

1. She (read) a book when the phone (ring).

2. While they (watch) TV, someone (knock) on the door.

3. I (meet) my old friend while I (shop) at the supermarket.

4. I (listen) to the radio when I (hear) about the alien invasion.

5. We (drive) to work when we (see) the accident.

6. What you (do) when I (call) you yesterday?

7. She (not/hear) the doorbell because she (listen) to music.

8. I (drop) my phone while I (run) for the bus.

9. They (wait) at the bus stop when it (begin) to snow.

10. I (watch) a funny video when the manager  (come) into the room