It is good weather to go out中不定式的用法是什么?如题

what () it is!A good weather B a good weather C good weather day ____pretty good weather it is today The weather isn't good enough for an outing,is it? what good weather it is=how good the weather is what ____ it is today!a.a good weather b.good weather 可不可以说It is good weather______good weather ,isn't it?A.What B.It is 我知道可以选A ,但为什么不能选B? ---- a good weather it is!a,how b,what 改错;Today it is a great weather,isn't it? is't it a lovely weather为什么要用a the weather is a .I can't stand it ( ) fine weather it is? 87.—The weather isn’t good enough for an outing ,is it?---Not in the least.We can’t have ____87.—The weather isn’t good enough for an outing ,is it?---Not in the least.We can’t have ________ at this time of the year.A.a nicer day B.a wors Good morning.This is the weather report.IGood morning.This is the weather report.IT's warm in Beijing today It is great weather,isn't it?改成感叹句（ ） （ ） （ ）is it! The weather there is nice.改成反义疑问句是The weather there is nice,is't it?还是The weather there is nice,isn't there? What good weather it is?是否有语法错误?还有What fun the story is How is the weather in London?It is very （ ） A,good B,rainy How is the weather in London? It is very____. 是填rainy 还是good?