Complete the text with the present passive or past passive form of the verbs in brackets. the sydney opera house ( (situate) next to the city's harbour. it isn't just for operas it (2) (use) for concerts and plays too. the opera house (3) (design) by the danish architect jorn utzon. the construction work (4) (start) in 1958, and the opera house (5) (complete) 15 years later. it (6) (open) by queen elizabeth ii in 1973. the roof (7) (make) of concrete, and it (8) (cover) with more than a million white tiles.