passive voice
We must save energy.
The energy must be saved.
Przekażę Sarze książki, jeśli będzie jutro w szkole.
I will give Sarah the books if she's at school tomorrow.
Who was the Iron Lady?
Margaret Thatcher
They make red wine from red grapes.
The red wine is made of red grapes.
Gdybym był bogatszy, kupiłbym ten dom.
If I were richer, I would buy this house.
Where is Thanksgiving celebrated?
In the United States.
Have your sisters decorated the room?
Was the room decorated by your sisters?
Zrozumiałbyś wszystko, gdybyś go posłuchał.
You would have understood everything if you had listened to him.
What is the capital city of Canada?
Ottawa