chuyển các câu sau sang câu bị động :
1. Someone broke into her house last night
2. Fog held up the trains.
3. They didn't look after the children properly.
4. They will laugh at your silly questions.
5. He turned off all the switches.
6. People often take him for his brother.
7. Did you take in his story?
8. Why has he put off the meeting ?
9. Noone has slept in his bed.
10. We have already sent for the doctor.
11. Dust has covered the floor.
12. Water fill the village in 2 hours