1. The Passive Voice is formed with the help of the auxiliary verb "to be".
2. Chalk is used for writing on the blackboard.
3. English is poken in many different parts of the world.
4. This consonant is pronounced with aspiration.
5. This hospital was built two years ago.
6. The light was not turned off.
7. All the cakes were eaten yesterday.
8. This work will be finished by us in time.
9. Where will be a new school built?
10. The door has been left open by someone.
11. Our trip has been put off by bad weather.
12. The telegram had been sent by him before his brother returned.