1. The letter has been written by a student.
2. The repair is done by workers.
3. We were met at the station.
4. This book will be much spoken about.
5. The salad is ready.
6. Washington is located on the Potomac River.
7. The trees were planted last autumn.
8. His report was listened to with interest.
9. All letters will have been written by twelve o'clock tomorrow.
10. The house will have been built by the end of next year.