did you know that it's been found in laboratory testing that some types of oil are reallybad foir us?我想问,第一个that启什么作用,第二个that又是什么意思,什么作用

why did you say that ,it seems that you know me well That guy .I know what you did. how did you know that什么意思 did you know that there is another museum just like it over the sea?翻译 when did you get to know her?It was in 1998that还是where we worked It is apprehensible that you did it. Did you know that it was when the guests had already left______they went on with their discussion.为什么填that、 Where did you get to know her?－－It was on the farm where we worked.为什么不用that, Where did you get to know her?It was on the farm we worked是能填THAT吗 为什么? know you nothing of that是什么语法?不是应该说Did you know nothing of that吗? It's a pity that know you. That is all you know about it well,it depends.you know that Did you know how the accident _______(happen) that afternoon? He actually did not know that you like Did you know that tea,the most短篇作文 Did you know that tea,the most短篇作文 Did you know that tea,the most短篇作文