1. Who knows three foreign languages?
2. Did we close the door quickly?
3. Where does he spend his weekends?
4. Is my uncle an engineer or a doctor?
5. What is Ben doing now?
6. Has Bill got a lot of friends?
7. Does John like apples or oranges?
8. His family visited us last year, didn't it?
9. Where were Robert's parents?
10. I am not a taxi-driver, am I?