1. The mistake was discovered by Alice.
2. The winner of the quiz has been announced by the teacher.
3. The new plan is being considered by some people.
4. The meeting has been canceled by the president.
5. A new bridge will be built in this city.
6. Wool sweaters should be washed in hot water.
7. Have you been invited to the party by anyone?
8. The church bell was rung as a flood warning by us.
9. She was given two weeks by the police to pay the fine.
10. A big hole had been cut in the steel door by the burglars.
11. It was expected by Nhung that we would give her the job.
12. Some big trees were destroyed by the storm yesterday.
13. We were sent a lot of moon cakes by my mother.
14. An interesting book was given to me by my father.
15. The answer to the question has been found by us.
16. In the 18th century, linen cloth was made completely from cotton by people.
17. Two thousand liters of milk are going to be produced by our company next month.
18. A new bridge will be built in the area by them.
19. This computer is not used very often by us.