1. what does your friend wear today?

2. how long have your lived in your flat?

3. has he played the violin since he was 5?

4. what time does the plane from Belgrade arrive?

5. what does they are discussing for five hours?

6. what does Lina usually wear at work?

7. why does Ian learn Bulgarian this year?

8. when does your sister is coming back from her holiday?

9. does water cover 80 per cent of the earth's surface ?

10. how many people speak English as a first language?

11. what language do those people speak?

в некоторых не уверена