题目内容：

形容词变比较级
把下列形容词变成比较级
tall,beautiful,cool,short,calm,young,athletil,heavy,athletil,thin,smart
long,funny,cute,serious

优质解答

taller,more beautiful,cooler,shorter,calmer,younger,more athletic,heavier,thinner,smarter,longer,funnier,cuter,more serious