16. came - opened - turned - began
17. rained - were - had - were
18. was cooking - was cleaning
19. came - was working - told - did - had
20. woke - looked - was raining
21. were having - raing
22. was smoking - was reading
23. was mowing - started
24. was having - blew
25. came - was waiting
26. saw - was driving
27. was waiting - was doing
28. arrived - were having
29. were playing - were going