Past simple passive voice. exercises this old building is in one of the countries of europe. it’s not a natural object. it (to make) by man a long time ago. now it (to see) as a tourist attraction. it’s a famous old building. it (not to build) by the romans. galileo, the famous scientist, dropped heavy objects from this building to make his experiments. the upper floor 4 (to complete) in 1319. it (to build) by tommaso pisano. the largest bell of the building 6 (to install) in 1655. the bell-chamber (to add) in 1372.