1. The manuscript was found in the basement
2. Is the service charge included?
3. A book was bought a week ago
4. This book is often asked for
5. My sister will be operated a distinguished surgeon
6. A good story has just been told me by John
7. The room has been tidied thoroughly
8. His retirement will be celebrated
Попробуй сделать второе сама. Конструкция passive voice крайне проста - be + Vз
(be + третья форма глагола)
Книга была куплена мной.
The book WAS BOUGHT by me.