Помогите пожалуйста с заданием !!!!!!!!!!!!!!

1 the students are given extra homework every day.

2 the USA doesn't sell his books.

3 an earthquake destroyed the library.

4 the spaghetti wasn't eaten by the children.

5 plastic is used in hundreds of products.

6 the police caught the thief.

7 we weren't told about the exam.

8 tigers aren't found in Africa.