Change the Active Voice into the pPassive one:
1.We form passive voice with the help of the auxiliary verb"to be".
2. One uses chalk for writing on the blackboard.
3.People speak English in many different parts of the world.
4. We pronounce this consonant with aspiration.
5. They built this hospital two years ago.
6. They didn't turn off the light.
7. They ate all the cakes yesterday.
8. We shall finish this work in time.
9. Where will they build a new school?
10. Somebody has left the door open.
11. Bad weather has put off our trip.
12. He had sent the telegram before his brother returned.