1. I have to read a lot.
2. I can play the guitar.
3. I'm here for the first time.
4. When I was writing a letter, he had already returned from his business trip.
5. Bring us two cups of coffee, please.
6. When I was 30 years old, I loved to play the guitar.
7. I saw him. And you, have you seen Mark?
8. Have you ever been to London?
9. They say he was once a very famous artist.
10. He should see a doctor.