"The book is written."
Translation:Το βιβλίο γράφεται.
The book is written means that someone was writting a book and has now finished it, thus should be translated to Το βιβλίο γράφηκε. Το βιβλίο γράφεται translates to The book is been written.
The book is being written.
I just reported a number of these sentences.