They hold exhibitions.
Exhibitions are held.
They show paintings.
Paintings are shown.
Vincent van Gogh painted "Starry night"
Van Gogh painted "Starry Night".
They show visitors around.
Visitors are shown around.
James Cook discovered Antarctica
Antarctica was discovered by James Cook.
They introduce new artists.
New artists are introduced.
They answer my question
My question is answered.
The Mayans built Chichén Itzá.
Chichén Itzá was built by the Mayans.