Which of us that knows something about physics does not know this?

Mother bought us a present ------I saw in that store,------made me very happy.A.which,that B.that,which C.of which,that D.in which,which The medicine has many functions,__are unknown to us.a.some of which b.which of themc.that some ofd.of which some of them Which of us that knows something about physics does not know this? It is here that some of the difficulties which interest us begin. He told us ______ he had done.Which of the following is WRONG?填all that还是that? 1,There sre three _ assistants in that _ shop.A,women,shoe B,woman,shoe C,woman ,shoes D,women,shoes2,Mr.Smith always has _ to tell us.A,some good pieces of newsB,some pieces good of newsC,some good piece of newsD,some piece good of news3,I don't kno He showed us round the house _______ he paid quite a lot of moneyA.which B.that C.for which D.on which that makes two of us which of us _____ to beijing doesn't know the great wall of china?A.which have beenB.who has beenC.who have beenD.that have been All of us found ( )difficult to work out the maths problem.A.it B.that C.which D.what the news came____most of us had pasted the final exam A.THAT B.what C.which D./ Let's discuss only such questions__worry every one of us.A.as B.why C.which D.that Let's discuss only such questions__worry every one of us. A.as B.why C.which D.that that which 的区别,此时为什么要把which改成thatit informs us of the latest news which is happening in the world 此时为什么要把which改成that 定语从句题,为什么要用which而不用that?非限制性的定语从句不是用that么?they helped us time and again,( )very kind of them.A who wereB which wasC that wasD which were the answer is C.tellme whyOnly some of us will be attending john and kate's wedding ceremony.__ they really expect us all to paricipate.A which B to which C in which D that Which of us ___to beijing doesn't know the Great Wall of China?C who have been D that have been为什么选D，C哪错了 When people talk about the cities in the US ,the first ( ) comes into their rheir minds is New YorkA.of which B.of whom C.one D.that