1. Everything had been done before he came.
2. The letter had already been sent.
3. He had been informed of the news before .
4. Some new Metro lines are being constructed now.
5. Wait a little. The last students are being examined there.
6. The tape-recorder couldn't be used, it is being repaired.
7. A very interesting program was being broadcast.
8. He has not been told about it yet.
9. Her face was hidden by the branches of the tree.
10. I was taken there by his brother more than once.
11. I am surethey will be pleased with your presence.
12. I was informed about it only yesterday.
13. She was listened to very attentively.
14.This little boy was taken no notice of .
15 . The letter hasn't been sent yet.
16. English is spoken in different parts of the world.
17. Milk is used for making butter .
18. I'm often invited to their parties.
19. A lot of new houses are built in this district every year .
20. When was this new house built?