I Chuyển các câu sau sang câu bị động

1. Mary types letters in the office.

Letters are typed in the office by Mary.

2. His father will help you tomorrow.

You'll be helped by his father tomorrow.

3. Science and technology have completely changed human life.

The human life has completely been changed with science and technology.

4. Peter broke this bottle.

This bottle was broken by Peter.

5. They are learning English in the room

English is being learnt in the room.

6. My mind can’t be changed

7. I hadn’t been told about it

8. Her telephone number isn’t known

9. The children will be brought home by my students

10. I was sent a present last week

6. My mind can’t be changed

7. I hadn’t been told about it

8. Her telephone number isn’t known

9. The children will be brought home by my students

10. I was sent a present last week