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