13.Oxford University was built _________ the 12th century. A. in B. of C. at D. on 14.The second question was ___________ than the first one. A. difficult B. more difficult C. most difficult D. the most difficult 15._________draw on the walls and tables, please. A.Do B. Don’t C. Should D. Shouldn‟t 16. Last summer, I __________fishing with my uncle in the afternoon. A.go B. went C. goes D. Going 17. Do you know __________drink in Viet Nam? A. popular B. more popular C. more and more popular D. the most popular 18. People in Tokyo are very polite friendly. A. and B. or C. but D. So 19. Britain's most common ____ activities are watching TV and films, and listening to the radio. A. free B. leisure C. good D. popular 20. This is ___________ delicious food I have ever eaten. A. more B. most C. the most D. many