Ответ:
1)Why you have missed the train?
2)How many times David has visited the Vatican?
3)Where birds build their nests?
4)What kind of projects they have started recently?
5)What are you sending to your aunt?
6)Who studies Physics?
7) When bus is coming?
8)Where are you live?
9)What children are painting?
10)Where are you lost your wallet?
.....
как-то так