1.I don't know the c___ of the matter.2.If I become a lawyer,I'll be a ___ to help others

I don't know the......the question I ( )Jack the( ) answerA,think; doesn't know B.don't think ; know C.don't think ; knows D.think ; don't know why?but i don't know the I don't know the place.是什么意思? I don't know. I don’t know the rule.还是I don’t know the rules. but't i don't know the way______the hospitalA.to B for C to go I don't know lucy,but I the( )girlA heard B knew about C learned D heard ofI don't know lucy,but I ( )the girl I don't know the way___to the hospitalA.go B.to go C.going D.went I don't know the ________names.I don't know the ________names.A.twins B.twin's C.twins' D.twins's I don't(know)the teacher,but I(know about)her.可以换成know about;know? I don't(know)the teacher,but I(know about)her.可以换成know about ; know? “i don't know you know i don't know I don't know ( ) the fashion shop is.A.where B.when.C.how D.what I don’t know the homework _______ today.A.on B.in C.of D.for I don't know the ____names A.twin's B.twins' C.twin D.twins i know the times i don't have one myself I‘m s（）,I don't know the same