l do not know how_____this new word.A read B to read C to reading D/

Why l do not know.This is my feel.Understand?I do not know your mean. How___(high)the building is!Do you know what___(high)it is? l do not know what clothes l can wear to the party=l do not know ( ) ( ) ( ) to the party. l do not know where this weekend.(visit) But l stand before you,but l do not know l love I do not know I do not know l don't know whether l should do it or not. l really do not know ___l should do that.填连词,并说明为什么? l,do,not Idiots,know that you do not know 请问 I DO NOT KNOW sorry,i do not know! Do not know怎么读? Why I do not know l do not know how_____this new word.A read B to read C to reading D/ l do not know the man who your father is talkingto中为什么用介词to l do not want others to know that,please keep s________for me