1. arrived, had already gone

2. have never been

3. invited, had already made

4. started, hasn't stopped

5. went, enjoyed, hadn't gone

6. got, had already fallen

7. met

8. spent, had never gone

9. had или has had

10. has owned

11. didn't get, arrived, had already started

12. have studied

13. had just finished

14. quitted, hasn't had