$\text{1.}$ Letters are typed by Mary in the office.

$\text{2.}$ You will be helped by his father tomorrow.

$\text{3.}$ Human life has been changed by science and technology.

$\text{4.}$ This bottle was broken by Peter.

$\text{5.}$ English is being learnt in the room.

$\text{6.}$ My mind can't be changed.

$\text{7.}$ I hadn't been told about it.

$\text{8.}$ 2 newspapers and 1 magazine are bought by me every day.

$\text{9.}$ The children will be brought home by my students.

$\text{10.}$ The room should be kept tidy by us.

$\text{11.}$ We were given more information by her.

$\text{12.}$ All the workers were being instructed of the plan by the chief engineer.

$\text{13.}$ Many flowers are planted in the garden by us.

$\text{14.}$ Some of my books have been taken away.

$\text{15.}$ The meeting will be held before May Day.

$\text{16.}$ The engine of car has to be repaired.

$\text{17.}$ The window was broken and some pictures were taken away by the boys.

$\text{18.}$ A lot of money are spent on advertising every day.

$\text{19.}$ A story is going to be told by our teacher.

$\text{20.}$ A cake is being cut with a sharp knife by Mary.

$\text{21.}$ The woman with a red hat was looked at by the children.

$\text{22.}$ The victims have been provided with food and clothing.

$\text{23.}$ English is spoken in almost every corner of the world.

$\text{24.}$ 30 bottles of milk are drunk by the children every month.

1. Letters are typed in the office by Mary 

2. You will be helped by his father tomorrow

3. Human life has been changed by science and technology

4. This bottle was broken by Peter

5. English is being learnt in the room

6. My mind cann't be changed

7. I hadn't been told about it

8. Two newspapers and one magazine are bought every day

9. The children will be brought home by my students

10. The room should be kept tidy

11. We were given more information

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

13. Many flowers are planted in the garden

14. Some of my books have been taken away

15. The meeting will be held before May Day

16. The engine of the car has to be repaired

17. The window was broken and some pictures were taken awat by the boys

18. A lot of money is spent on advertising every day

19. A story is going to be told by our teacher

20. A cake is being cut with a sharp knife by Mary

21. The woman with a red hat was looked at by the children

22. The victims have been provided with food and clothing

23. English is spoken in almost every corner of the world

24. 30 bottles of milk are drunk by the children every month

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