1. The survivors heard/had heard a loud noise before the building collapsed.
2. We drove/were driving to the airport when our car broke down.
3. Tom escaped/was escaping from the fire through the kitchen window.
4. How long had you been waiting/had you waited at the station when the train arrived?
5. Andrew worked/has worked as a lorry driver since 2008.
6. John was hungry when I saw him. He hadn't eaten/hadn't been eating anything all
day.
7. It had rained/had been raining for hours and the roads were starting to flood.
8. The sun had set/had been setting by the time we arrived at the campsite.
9. Tony has lost/lost his car keys; he can't find them anywhere.
10. It was a nice day - the sun was shining and a warm breeze blew/was blowing.