Lucy and Lily are twin sisters.They looks alike but they are not like each other in life. Lucy is a hard-working student.She studies harder than the other students in her class.Her sister,Lily, however ,doesn't study as hard as her.Lily is taller than Lucy and looks more beautiful than her sister.Lucy could run quite fast,but Lily can even run faster than Lucy. (我发现副词形容级真心想不到该怎么用进去...)
