The Passive Form

Completa el texto con la forma pasiva correcta de los verbos entre paréntesis.
The building in front of you (call) the Summer Palace. It (build) in 1728 and nowadays it (consider) one of the finest examples of baroque arquitecture in the country. The south façade of the building (restore) several times since 1728, but the rest of the building (keep) unaltered. Today the Palace (own) by the town hall and for the last ten years it (use) as a home for the Art Museum. Last year one of our most valuable paitings (steal) from the museum. At the moment a new wing (add) to host the contemporary art collections, with special security conditions.