Grammar review. Correct the mistakes
1. The address were written on a sheet of paper.
2. The dress are made of silk.
3. The dog were injected yesterday.
4. The letter will been sent soon.
5. The lectures is attended by all the students.
6. The helicopter are piloted by my dad.
7. The flowers will watered tomorrow.
8. The keys was lost yesterday.
9. The tests is written every month.
10. The car were repaired three days ago.
11. The mobile will bought next month.
12. The tower were designed by Eiffel.
13. My cousin are taken to the hospital.
14. The pictures are taken yesterday.​