1. has been 2. travelled 3. Have you ever lived .....? 4. has read 5. went 6. has passed 7. started
8. has broken 9. left 10. has just watched 11. didn't see 12. has built 13. stopped
14. have not decided 15. have learnt 16. did you arrive 17. didn't know 18. Have you read ... ?
19. Did he work.....? 20. Has John been ....?