Turn these sentences into active voice

Turn these sentences into active voice
1. The Imperial Academy was constructed under Emperor Ly Thanh Tong.
2. The Temple of Literature was found in 1070.
3. Khue Van pavilion is regarded as the symbol of Ha Noi.
4. Lots of souvenirs inside the Temple of Literature are sold.
5. The Temple of Liteature is considered as one of the most important cultural and historic places/ in Viet Nam.
6. Many precious relics are displayed 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.
8. The Imperial Academy was used to educate young men for the country.
9. Students at The Imperial Academy are selected from local examinations.
10. In 2010, the 82 Doctors stone tablets were recognized as a memory of the World.
11. The first Doctors' stone tablets were erected in 1484.
12. The Temple of Literature is surrounded by old trees.
13. Minh Mang tomb was started constructing in 1842 and was complete three years later.
14. Papers at the Royal examinations in the past were passed by the King.
15. Chu Van An was invited to become the principal of the Imperial Academy by Emperor Tran Hien Tong.
16. During that period, 2,323 doctors graduated from The Imperial Academy.