1. This flower is watered by my father every morning
2. Fiona was invited to John's birthday party last night

3. The dinner is being prepared in the kitchen by her mother

4. Our teeth should be cleaned twice a day

5. The english grammar has been explained by our teacher

6. Tom's parents will be visited next month

7. The secretary wasn't phoned by the manager this morning

8. Was this beautiful dress made by Mary?

9.  These old pictures won't be hung in the living room

10. This house and these cars are going to be painted by the greeens for christmas day

11. the cats had been fed by Ann before she went to the cinema

12. has the most valuable paiting in the national museum been stolen by the thieves?

13. The new president will be interviewed on TV by some people.

14. How many languages are spoken in Canada?

15. Are those shoes going to be repaired?

16. His nose has been broken in a football match.

17.  Had the above sentences been finished by you before 10.00 this morning

18.These postcards are sent to us

19. 

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

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

22. Two poems were being written by tom

23. this room may be used for the classroom

24. All the homeworkb needn't be done.

*****cấu trúc câu bị động*****
HTĐ: S+is/ are / am +PT2 +(By+O)

HTTD: S+is/ are/ am+being+pt2+( by+O)
HTHT: S+have/ had+ been +pt2+( by+O)

QKĐ: S+was/ were+ pt2+( by+O)
QKTD: S+was/ were+ Being+pt2+( by+O)