Past Simple or Past Continuous?

1. She ________ her homework yesterday. (finish)

2. While I _______ TV, my Mum _____________ an apple pie. (watch, bake)

3. When I _________ into the room, all the guests ___________. (come, dance)

4. We _________ in the garden at 3 o’clock. (play)

5. The girls ________ when their parents __________ home. (sleep, come back)

6. I _______ him a few days ago. (see)