1. when did you begin to play the piano?
2. how does he go to school?
3. why do you like learning English?
4. when đi you do your exercises?
5. where đi you buy this shirt?
6. how often does she visit you?
7. what were you doing when i called you last night?
8. how long does it take her to do this exercises?
9. how does she sing English songs?
10. when đi he sleep on the street?
