1. was playing

2. was planting

3. was writing

4. were eating

5. was working

6. was sitting

7. was having

8. was baking

9. was cooking

10. was waiting

11. was walking

12. was eating

1. danced

2. was driving; broke down

3. was reading; was watching

4. worked

5. lost

6. was waiting; came

7. were talking; came

8. came; was knitting

9. came; was writing

10. was waiting; knocked