We did our homework.
Our homework was done.
Polar bears eat seals.
Seals are eaten by polar bears.
Everyone spends lots of money on decoration in Christmas season.
Lots of money is spent on decoration in Christmas season.
She will take her dog for a walk tomorrow.
Her dog will be taken for a walk tomorrow.
John collects money.
Money is collected by John.
A lot of people love Coca-Cola.
Coca-cola is loved by a lot of people.
I have asked you about your family.
You have been asked about your family.
Thomas Edison imvented the light bulb.
The light bulb was invented by Thomas Edison.
The kids love ice-cream.
Ice-cream is loved by the kids.
Machado de Assis wrote 'Dom Casmurro'.
Dom casmurro was written by Machado de Assis.
Sherlock Holmes could solve the mystery.
The mistery could be solved by Sherlock Homes.
Ada Lovelace created the first computer algorithm.
The first computer algorithm was created by Ada Lovelace.
Her mom cooked spaghetti.
Spaghetti was cooked by her mom.
Anna opened the window.
The window was opened by Anna.