1. The Imperial Academy was constructed under Emperor Ly Thanh Tong.
=> They constructed the Imperial Academy under Emperor Ly Thanh Tong.
2  The Temple of Literature was found in 1070.
=>They found the Temple of Literature in 1070.
3. Khue Van pavilion is regarded as the symbol of Ha Noi.
=>They regard Khue Van pavilion as the symbol of Ha Noi.
4. Lots of souvenirs inside the Temple of Literature are sold.
=> They sell lots of souvenirs inside the Temple of Literature.
5.  The Temple of Literature is considered as one of the most important cultural and historic places/ in Viet Nam.
=> They consider the Temple of Literature as one of the most important cultural and historic places/ in Viet Nam.
6. Many precious relics are displayed in the Temple of Literature.
=> they display many precious relics  in the Temple of Literature.
7. The Temple of Literature is located in the centre of Ha Noi about 2 kilometres west of Hoan Kiem Lake.
=> They locate the Temple of Literature in the centre of Ha Noi about 2 kilometres west of Hoan Kiem Lake.
8. The Imperial Academy was used to educate young men for the country.
=>they used the Imperial Academy to educate young men for the country.
9. Students at The Imperial Academy are selected from local examinations.
=> They select students at The Imperial Academy from local examinations.
10. In 2010, the 82 Doctors stone tablets were recognized as a memory of the World.
=> They recognized  the 82 Doctors stone tablets as a memory of the World in 2010.
11. The first Doctors' stone tablets were erected in 1484.
=>They erected the first Doctors' stone tablets in 1484.
12. The Temple of Literature is surrounded by old trees.
=>Old trees surround the temple of Literature.
13. Minh Mang tomb was started constructing in 1842 and was complete three years later.
=> They started constructing Minh Mang tomb in 1842 
14. Papers at the Royal examinations in the past were passed by the King.
=> The king passed papers at the Royal examinations in the past.
15. Chu Van An was invited to become the principal of the Imperial Academy by Emperor Tran Hien Tong.
=> Emperor Tran Hien Tong invited Chu Van An  to become the principal of the Imperial Academy.
16. During that period, 2,323 doctors  graduated from The Imperial Academy( câu chủ động-active voice)