Ответ:

3. Jennifer hasn't finished her homework

4. They have met the president

5. No, we haven't done

6. Has Roberto visited Vancouver?

7. Yes, he has done

8. Mrs. Smith hasn't read the book

9. He has been a teacher

10. Have you been in jail? 11.

11. I haven't cleaned my room

12. No, they haven't been

13. Has she been sicked

14, has she  swum in the ocean

15. They haven't arrived

16. Where have they been

17. We have lived here

18. What has he done

19. It hasn't rained

Объяснение:

Have/has + 3d verb/ed