И еще раз помогите :) надо поставить глаголы или в Past Countinions или в Past Simple

5.opened, were sitting 6. when did you begin 7. were discussing 8. was reading, fell 9. swept 10. was sweeping 11.did they go 12.were sailing, saw 13. were cooking 14. were cooking 15. finished 16. were having 17. Did you watch, were watching 18. when did you go 19. was going 20. was sleeping