1. Mary was preparing her Geogaphy project . 2.Mary wasn't preparing her Geogaphy project . 3. Was Mary preparing her Geogaphy project ? 4. Bob was surfing the net. 5. Bob wasn't surfing the net .6. Was Bob  surfing the net?  7. The boy was walking with his dog. 8. The boy wasn't walking with his dog. 9 Was the boy walking with his dog? 10. My dad was painting the bathroom. 11.  My dad wasn't painting the bathroom . 12.  Was my dad painting the bathroom? 13. I was enjoying this party. 14. I wasn't enjoying this party.15. Were you enjoying this party?

16. The President visited the Olympics. 17.  The President didn't visit the Olympics. 18. Did the President visit the Olympics? 19. Susan liked skiing. 20. Susan didn't like skiing. 21. Did Sue like skiing? 22. They were at the theatre. 23. They weren't at the theatre. 24. Were they at the theatre?  25. The flood destroyed the bridge. 26. The flood didn't destroy the bridge. 27. Did the flood destroy the bridge. 28. Last week our relatives bought a new car. 29. Last week our relatives didn't buy a new car. 30. Did your relatives buy a new car last week?