Помогите пожалуйста скобки раскрыть

1. was cooking // went
2. hurt // was skating
3. entered // were feeding
4. was visiting // bought
5. started // were bathing
6. was having
7. came // was doing
8. What were you doing. .?
9. was going
10. was sleeping // went
11. was reading // came // sat
12. was walking // passed
13. was looking // saw
14. were answering // entered
15. were drinking //came
16. was walking // passed
17. was thinking // fell
18. listened
19. entered // was writing // were copying
20. were getting // began