They built this museum a century ago.\This museum was built a century ago.
Sam baked a big cake.\The big cake was baked by Sam.
Cookies will take over the world.\ The world will take over by Cookies.
My father built the house last year.\The house was built last year by my father.
The King will visit the town next month.\The town will be visited by the King next month.
I open the window.\Window is opened by me.
Lena had eaten all the food.\All the food had been eaten by lena.
stylist Kirill decorate The dress.\The dress is decorated by stylist Kirill.
Professor Brown will ask a lot of questions after his lecture.\A lot of questions will be asked by professor Brown after his lecture.
Boss opens the letters every morning.\Boss opens the letters every morning.
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Активный и пассивный залог. Проверьте пожалуйста! Заранее спасибо!!!

Спасибо!!!

A big cake was baked by Sam. The world will be taken over by Cookies. The window is opened by me. The letters are opened by boss every morning.