They restored the ancient artifacts carefully.
The ancient artifacts were carefully restored by them.
The children admired the dinosaur skeleton in the main hall.
The dinosaur skeleton in the main hall was admired by the children.
My wallet has been taken
Someone has taken my wallet.
The guide explains the history of the paintings to the visitors.
The history of the paintings is explained to the visitors by the guide.
They are installing a new lighting system for the gallery.
A new lighting system is being installed for the gallery by them.
The new ship will be launched next week.
They will launch the new ship next week.
The museum staff cleaned the display cases yesterday.
The display cases were cleaned by the museum staff yesterday.
The museum will open a new wing next year.
A new wing will be opened by the museum next year.
The food is still being prepared.
They are still preparing the food.
The artist donated a famous sculpture to the museum.
A famous sculpture was donated to the museum by the artist.
The visitors took photos of the ancient artifacts.
Photos of the ancient artifacts were taken by the visitors.
My purse has been found by one of the cleaners.
One of the cleaners has found my purse.