Odpowiedź:
1. How long did you travel here ?
2.How long your brother have broken legs ?
3.In how long time you finished your homework ?
4 How long have you known Ben?
5. How long we know each other?
6. how long you make ready your self for today's party?
7. How long you walking here ?
8. How long you cooking cake for my birthday today ?
9. How long was raining?
10.How long was your flight before you landed here ?
