Ответ:
1. How David will go to Turkey?
2. Who booked tickets to Berlin last Monday?
3. When his train usually arrives in Kharkiv?
4. Where we shall have a longer stop in two hours?
5. What train always runs on time?
6. Why she hasn't written the place and date of her birth in the personal registration card at the hotel?
7. When their train arrived?
8. Where you haven't taken a bus yet?