Ответ:

1. happened

2. was walking home

3. He was carrying    

4. saved

5. had bought

6. was holding

7. it sounded

8. was playing

9. bit

10.went

11. treated  

12.hanged

13. had just been

14. They had to stay at ..

15. He left the  house and

16. was watching ...

17. disappeared

18. stood up

19. went back home

20. sank

Объяснение: