1. Letters are being written in the office by Mary.
2. I was helped by his father yesterday
3. Human life is being changed by science and technology
4. This bottle has just been broken by Peter
5. English is being learned in the room by us
9. The children are brought home by them
10. I was sent a present by Lan last week.
11. I was given more information by her
12. All the workers were being instructed by the chief engineer yesterday
13. Tea can be made with hot water by Lan
14. Some of my books were taken by Tuan yesterday.
15. The meeting will be held by them in May
16. The engine of the car must be repaired by Mr. Nam
19. A story will be told by Miss Lan
20. A cake is cut with a sharp knife by Mary
22. The victims were provided with food and clothing by them
23. English is spoken by Mary when she is in London.
24. This machine can be used by them before 5:30 p.m
