Chuyển các câu sau sang câu bị động

1. My briefcase has been taken away.

2. Our written work was returned to us by our teacher.

3. The meeting will be held before may day.

4. The little boy was bit by the mad dog.

5. Five suspects have been arrested by the police.

6. He was ordered to take a long rest by the doctor.

7. All the workers were being instructed of the plan by the chief engineer.

8. Their friends have been met at the railway station by a group of students.

9. Tom wasn't allowed to take these books home.

10. Exercises won't be corrected by the teacher tomorrow.