Heeelp!!!!!! даю много баллов

1.Have you ever been to London?
2.I hope you are enjoying your stay here.
3. Не знаю
4.By the way, you speak English fluently.
5. You are flattering me, but thanks anyway.
6. Your English sounds very good.
7. Can I ask you a favour? дальше чёт не понимаю
8. I know the city like the back of my hand.
9. Could you show me around the city?