it 指代什么?we know that amateurism is spontaneous,that is why i

what i do not know is that why... I suppose that is why...中that作什么成分? That is why I took 英语翻译- Now,why is it you think that I'm that dumb that I woul I know where that is “It is known that Chinese people are smart.” 中的It 指代什么? Everybody should know that it is I rather than others_______ it is true that we do not know what we have got we lose it.选 It's not what do we know that's important is who do we know. I don't know,what's the situation.What is this?Why is that It is fated that I meet you.It is my choice that we become f why is it that 是什么从句?