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n.A. worse B. bad C. best5. The air is getting much______than a few years ago. A. clean B. cleanest C. cleaner6. The Changjiang River is one of ________ in the world.A. the longest river B. the longest rivers C. longest river7. — The doctor told me not to eat too much. —He39。s right. you eat, you will be.A. The less。 the more healthier C. The more。t so famous _____ Washington. However, it39。 largest B. as。 large9. I am good at math, but his English is ________ than mine. A. much better B. more better C. very better10. Beijing is one of __________ cities in the world.A. the biggest B. bigger C. biggest11. Winter is ing. The weather is getting_____. A. colder and colder B. cold and cold C. more and more colder12. Hainan is a very good island. It39。t make mistakes in the math exam. She is _____ in my class.A. the most careful B. the most careless C. more careful16. 一Who do you think is _______ actor? 一I think Zhao Benshan is. B.most funny C.the funniest17. There isn39。t think of one.A. a better B. the better C. a best19. My grandpa told a good story, but I told a ______ one.A. good B. better C. worse20. What kind of animal do you like ____ , the tiger, the lion or the elephant?A. best B. well C. better21. —Did you love your day trip? —Yes,we enjoyed the roller coaster ______ of all. 22. Lucy is one of ________ in her cl