Ответ:

1. Returned

2. Had returned

3. Finished  

4. Had finished

5. Thought, had lost  

6. Told, had seen

7. Came, had already cooked

8.  Father returned, had already done

9. Entered, had already opened

10. Gave, had bought

11. Show, had not washed

12. Gave, had bought

13. Saw, had not washed  

14. Understood, had not done

15. Knew, had not yet come

16. Woke, had already gone

17. Thought, had not yet come  

Объяснение: