1, Letter are typed in the office by Mary.

2, You will be helped by his father tomorrow.

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

4, This water was broken by Peter

5, 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 know

9, The children will be brought home by my students

10, I was sent present last week

11, We were given more information

12, All the workers of the plan were being instructed by the chief engineer

13, Tea can't be made with cold water

14, Some of my books have been taken away

15, The meeting will be held be for May Day

Đây là bài bn cần nhé! vote mik 5* + cảm ơn nhé!

1. The letters are typed by Mary in the office. 

2. You will be helped tomorrow.

3. Human life has been completely changed by science and technology. 

4. This bottle was broken by Peter.

5. English are being learned by them in the room. 

6.  My mind can not be changed. 

7. I had not been told about it. 

8. Her telephone number isn't known by me. 

9. The childen will be brought home by my student.

10. A present was sent me last week. 

11. More information were given us by her. 

12. All the workers of the plan were instructed by the chief engineer. 

13. Tea with cold water couldn't be made by them. 

14. Some of my books has been taken away. 

15. The meeting will be hold before May Day.