Dali didn't paint Guernica. (passive)
Guernica wasn't painted by Dali.
A famous designer didn't design her dress. (passive)
Her dress wasn't designed by a famous designer.
Beethoven wrote many songs. (passive)
Many songs were written by Beethoven.
Someone stole all of the money. (passive)
All of the money was stolen.
The World Cup was won by Spain. (active)
Spain won the World Cup.
Penicillin wasn't discovered until 1928 by Fleming. (active)
Fleming didn't discover penicillin until 1928.
Fireworks were invented in China. (active)
China invented fireworks.
Our school was built in 1867. (they) (active)
They built our school in 1867.
