Будь - ласка перетворіть ці речення на питальну форму...

1. I cleaned my teeth three times yesterday.
2. It was hot in the room, so I opened the window.
3. The concert began at 7.30 and finished at 10 o'clock.
4. When I was a child, I wanted to be a doctor.
5. The accident happened last Sunday afternoon.
6. Itʼs a nice day today but yesterday it rained all day.
7. We enjoyed our holiday last year. We stayed at a very nice place.
8. Ann's grandfather died when he was 90 years old.