Put the sentences into passive voice.
1 They built these houses in 1902.
2 She bakes a cake every Sunday.
3 He broke the vase yesterday.
4 I clean the shoes every Friday.
5 We wrote the exercise an hour ago.
6 They use this road very often.
7 Thieves stole his car.
8 They cancelled all the flights.
9 Bachir told the truth.
10 She always loads the dishwasher.
11 He sometimes does the shopping.
12 The ambulance took Thameur to hospital.