用形容词或副词的适当形式填空

用形容词或副词的适当形式填空
1.Bob speaks Chinese ___(well) of the three.
2.This story is ___(boring) than that one.
3.The computer is too ____(expensive).I can't afford it.
4.The old man doesn't walk as ____(fast)as you.
5.It is much ___(cold) today than yesterday.