Put the sentences into passive voice. Mind the tenses.
They speak English and French at this hotel.
English and French
at this hotel.
The little boy broke the window last week.
by the little boy last week.
Our secretary typed this enquiry.
by our secretary.
Jill uses the computer quite often.
by Jill quite often.
The secretary defended some colleagues.
by the secretary.
Picasso painted this picture.
Last year they published ten books.
(by them) last year.
Molly has knitted this cardigan.
Next year George will visit Marc in London.
Next year Marc
by George in London.
Jim has opened the window.
Frank has broken many windows.
Lucy buys many books.
David has written some letters.
Benjamin Franklin invented the lightning conductor.
The lightning conductor
by Benjamin Franklin.
All students have learned the irregular verbs.
The irregular verbs
by all students.