Supply the correct passive from of the verbs in brackets:
1.America (discover)______by Christopher Columbus.
2.Sydney Opera House in Australia (finish)______in 1973
3.The Great Wall in China ( build ) _________many centuries ago
4.The Golden Gate Bridge in San Francisco ( complete ) _______in 1937.
5.Burj Khalifa in Dubai,the highest building in the world, (open)_______in 2010
6.A painting by Picasso (sell) ________for 3 millions dollar last year.
7.The Japanese Covered Bridge in Hoi An ( build) _______in the 16th century.
8.The Imperial Academy (consider) _________the first university in Vietnam
9.The site for Huong Pagoda (discover) _________about 2000 years ago.
10.One-Pillar Pagoda in Ha Noi (complete) ________in 1049