Chuyển các câu sang 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 moneyon 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 womanwith 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 5:30 p.m
10 After class, oneof the students always erases the chalk board