Câu bị động
1. They have to repair the engine of the car
2. The boys broke the window and took away some pictures
3. People spend a lot of money on advertising every day
4. Teacher is going to tell a story
5. Mary is cutting a cake with a sharp knife
6. The children looked at the woman with a red hat
7. They have provided the victims with food and clothing
8. People speak English in almost every corner of the world
9. You mustn't use this machine after 5:30p.m
10. After class, one of the students always erases the chalk board