The house was built by my father.
2. The window was broken by the wind.
3. The cake was eaten by the children.
4. The car was driven by my brother.
5. The tree was cut down by the lumberjacks.
6. The book was read by the students.
7. The flowers were watered by the gardener.
8. The house was painted by the workers.
9. The food was cooked by the chef.
10. The room was cleaned by the maid.
11. The dog was fed by the owner.
12. The clothes were washed by the launderer.
13. The garden was weeded by the farmer.
14. The dishes were washed by the waiter.
15. The grass was mowed by the gardener.
16. The house was decorated by the decorator.
17. The car was repaired by the mechanic.
18. The fence was built by the carpenter.
19. The letter was written by the author.
20. The house was sold by the real estate agent.