Don't worry that's why I always make two cups of tea请问这里的why做什么成分以及这句话是什么从句

don't worry.it's (). don't worry about that的意思? Don't worry.There's ________time left 选择题.A car is coming.____________A、Be careful. B、Don't worry. C、What's that? don't you worry about that和you don't worry about that有什么分别? Don't worry. Don't worry． Don't Worry Don't worry,there is nothing s with your son don't worry about your health. it's OK. let's don't worry about him错哪了 don't worry.let's work it out.3772 改错.Don't worry,Alice.there's anythings serious. What`s wrong?We have no salt.Don`t worry. thanks a lot for your kind help 1.don`t thank me 2.that`s ok 3.don`t worry 4.you`re welcome 让我们不要担心用英语怎么说let's don't worry对吗 还是not worry.具体 补全对话Don't worry.Let me take your .It's a coldDon't worry.Let me take your（ ）.It's a coldIs that all?Is seems( )than a cold随便几个词 don't worrying与don't worry