Complete the sentences with the Past Simple or Past Continuous form of the verbs

1. She [ ] a documentary when she [ ] knocking on the door.
2. Sandra [ ] an old ring while she [ ] the weeds in her parents' garden.
3. Thomas [ ] on the deck of the ship when he [ ] the whale.
4. We [ ] on our research paper when the computer suddenly [ ] down.
5. The tour guide [ ] us about the old church when the alarm [ ].
6. The young man [ ] to work when two people in black uniforms [ ] him.