Past tense, simple or progressive

It looks like you have a worksheet on past tense, including simple and progressive forms. Here's some help with filling in the blanks:

1. was painting
2. was lying, heard
3. didn’t hear
4. opened
5. was cleaning
6. invested
7. was
8. was working
9. understood
10. was swimming
11. began
12. was living
13. was driving
14. went
15. were talking
16. was raining
17. came
18. was staring
19. didn’t cut
20. were staying
21. looked
22. met
23. were waiting
24. was snowing
25. were setting

I hope that helps! If you have further questions, feel free to ask.