Change the following active sentences into passive voice.
1. plants and factories pollute rivers and lakes.
2. i will never forget this experience.
3. children damage plants.
4. have you finished the report?
5. they were feeding the cows when i reached there.
6. did your mother make a cake yesterday?
7. who has completed the work?
8. the police have caught the thief.
9. the tiger was chasing the deer.
10. they didn't buy this house.
11. kate doesn't like people asking her a lot of questions.​