Выполните второе задание а именно где 15 во и до конца пожвлуйста)

1. I have never eaten avocados
2. We haven’t been to Spain yet
3. My elder sister has already come back
4. Her mother has just made a new skirt
5. My little brother has already cleaned his teeth
6. Have you ever flown in a balloon?
7. She hasn’t met him yet
8. Jane has never been in hospital
9. They have just gone out
10. The sun hasn’t risen yet
11. Kevin has never broken his leg
12. Has Helen ever seen a ghost?
13. Have you spent your holidays in Europe yet?
14. John and Mary have just made a speech
15. Have the Flinstones bought a country house yet?