Chuyển những câu sau sang câu bị động: We are painting our house at the moment. An ambulance took the sick man to hospital. Visitors must leave umbrellas and sticks in the cloakroom

Chuyển những câu sau sang câu bị động
1, We are painting our house at the moment
2, An ambulance took the sick man to hospital
3, Visitors must leave umbrellas and sticks in the cloakroom
4, They make these actificial flowers of silk
5, You should practice English everyday
6, Has someone posted the letters?
7, The police will ask you several questions
8, My little brother has drink all the milk in the fridge