chuyển sang câu bị động
1. For a long time, people belive that the earth is flat.
2. Noone can do anything unless someone gives us more information.
3. We knew that he was honest.
4. They said President was arriving in the city.
5. Someone has stolen my watch on the table.
6. He suggested allowing council tennants to buy their house.
7. The manufactures are giving away small plastic toys with each packetof cereal.
8. This must have disappointed him.
9. A group of students have met their friend at the railway station.
10. Before they took exams thay had revised their lesson.
11. They suggested banning advertisements on TV.