Find a mistake in each sentence below

Exercise 2: Find a mistake in each sentence below 7. The stone stelae was engraved with the names of the top students in A B C D royal examinations. 8. Everybody in the house was asking questions after the thief had left. A B C D 9. Hue Imperial City was certified as a World Cultural History in 1993. A B C D 10. The factory use the most modem production methods. A B C D 11. One Pillar Pagoda was built in Emperor Ly Thai Tong in 1049. A B C D