1. Mark is giving back the book to the library.
The book is being given back to the library by Mark.
2. Thomas is drinking a coke.
A coke is being drunk by Thomas.
3. Jane will visit “El Prado”museum.
“El Prado”museum will be visited by Jane.
4. They sold their flat.
Their flat was sold by them.
5. Nancy was eating a big cake.
A big cake was being eaten by Nancy
6. John has paid the bill.
The bill has been paid by John.
7. Sam had written an article.
An article had been written by Sam.
8. You should open the window.
The window should be opened.
9. The tables haven’t been cleaned by the waiters.
10. Have the activities been done?