1. Mr.John watches the film.
=> The film is watched by Mr.John.
2. The people speak English all over the world.
=> English is spoken all over the world.
3. He is reading comic books
=> The comic books are being read ( by him )
4. We usually play volleyball after school.
=> Volleyball is usually played after school.
5. They sing the new song in the ceremony.
=> The new song is sung in the ceremony.
6. I took a lot of photos on last holiday.
=> A lot of photos were taken on last holiday.
7. She does the housework carefully.
=> The housework is carefully done.
8. The policemen help the children to cross the road.
=> The children are helped to cross the road by the policemen.
9. He sometimes write a letter to his penfriend.
=> A letter is sometimes written to his penfriend.
=> His penfriend is sometimes sent a letter.
10. My mother is watering the flowers in the garden.
=> The flowers are being watered by my mother in the garden.
11. The cat ate the sanwich.
=> The sanwich was eaten by the cat.
12. They told us to leave the room.
=> We were told to leave the room.