根据句意,用括号内的所给形容词的适当形式填空
Shanghai is one of _____ (big) cities in the world.
Who is ____(tall),the girl or the boy?
The more,the ____(good).
Things are much ____(light) on the moon than on the earth.
He is ____(old) of the two brothers.
The car driver is very _____(careful) when he is driving.