1、Though she is quiet,she is a (smartest,最聪明的,形容词最高级） student in our class.She always gets the first prize.
2、I don't think (differences,差异,名词复数） are important in a friendship.
3、He isn't as (outgoing,开朗的,形容词原级） as me.He always stays at home and reads.
4、A good friend (shares,分享,三单形式） everything with you.
5、Perhaps Lily is the (more serious,更认真的） of the two sisters.