it's been raining for almost a week.选what terrible weather 还是 how terrible单选题how 不是直接可以修饰形容词吗?

it's been raining for almost a week.
选what terrible weather 还是 how terrible
单选题
how 不是直接可以修饰形容词吗?

雨已持续下了一礼拜了
how 是修饰形容词的
how big your head is
what 是修饰名词的
what a beautiful girl she is