2. The bell was rang by children a few minutes ago.

3. The whole story was forgotten (by children) in a few days.

4. Was the speech made by the president last night?

5. Who was the music to this song written?

6. A song was sang by she.

7. I was hit.

8. The prise wasn't won by she.

9. Their beds wasn't made by them.

10. Нельзя сделать пассив, так как нет объекта.

11. Was the letters sent by him?

12. They was known by everyone.

13. The explanation was understood by all students.

14. That house was built by Thomas and his brother.