It's getting cool

It's getting cool It is getting cool It's getting cool. You must put on a c_____ 系动词和助动词区别It's getting cool is是助动词 getting 是主要动词吗It gets cool It's getting cool is是助动词 getting 是主要动词吗 it's getting dark. It's cool.的中文 It's cool in autumn it,s cool什么意思? It's cool to be it's getting dark.M____. _____!It's getting dark