Change these sentences into passive form: The boys broke the windows and took away some pictures. People spend a lot of money on advertising everyday. They may use this room for the classroom

Change these sentences into passive form :
1. The boys broke the windows and took away some pictures.
2. People spend a lot of money on advertising everyday.
3. They may use this room for the classroom. 
4. The teacher is going to tell a story.
5. Mary is cutting the cake with a sharp knife. 
6. The children looked at the woman with a red hat. 
7. They have provided the victims with food and cothing.
8. People speak English in almost every corner of the world.
9. You mustn't use this machine after 5:30 p.m.
10. Luckily for me, they didn't call my name.
11. After class, one of the students always erases the chalkboard.
12. You must clean the wall before you paint it.