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C .young ( ) You shorter than her . A .am B .is C .are ( ) The black dog is _____ than the white dog. A . thin B .thiner C .thinner ( ) John is _____ than Mike. A . strongger B .stronger C .strong ( ) Tom is 120 cm. Jack is _____than him. A. tall B. taller C. heavier ( ) Is the Great Wall than the Summer Palace? A. old