Supply the correct passive form of the verbs in brackets.
1. Sydney Opera House in Australia (finish) __________________ in 1973.
2. One-Pillar Pagoda in Ha Noi (complete) __________________ in 1049.
3. The Imperial Academy (consider) __________________ the first university in Viet Nam.
4. The Great Wall in China (build) __________________ many centuries ago.
5. The Golden Gate Bridge in San Francisco (complete) __________________ in 1937.
6. Burj Khalifa in Dubai, the highest building in the world, (open__________________ in 2010.
7. A painting by Picasso (sell) __________________ for 3 million dollars last year.
8. America (discover) __________________ by Christopher Columbus.
9. The Japanese Covered Bridge in Hoi An (build) __________________ in the 16th century.
10. The site for Huong Pagoda (discover) __________________ about 2000 years ago.