1. Their invitations have just been accepted.

2. All the tickets had been sold out by yesterday night.

3. The mail hasn't been brought yet.

4. The supper is being cooked now.

5. The children will be given presents tomorrow.

6. The New year tree was being decorated when I came.

7. This work will have been completed by the next week.

8. All the rooms are cleaned regularly.

9. They were phoned after a had left.

10. This important question has never been answered.