good

他在数学方面很优秀。

He is ___good at math.

每天喝足够的水对身体有好处。

Drinking enough water daily is ___good for your body.

我们现在是好朋友啦。

We are ___good friends now.

这个新手机比旧款好用多了。

This new phone works ___better than the old one.