2. Yes, I have. I have been to the country (before можно еще добавить) 3. Yes, he has. He has crossed the street 4. Yes, I have. I have brought your magazine. 5. Yes, I have. I have taken part in competitions (before). 6. Yes, I have. I have travelled abroad (before) 7. Yes, I have. I have already seen the new film 8. Yes, I have. I have played tennis (before). 9. Yes, he has. He has worked at an office (before) 10. Yes, she has. She has answered my question 11. Yes, I have. I have answered my teacher's question 12. Yes, I have. I have gone boating (before) 13. Yes, I have. I have fed my pets 14. Yes, it has. It has been a busy day 15. Yes, it has. It has become better