Who that has experienced so much will do that?的句法成分里面的that,为什么不能是who好像说的不是很清楚...我主要是想问第一个that在里面起什么作用，为什么不能是who...

Who _____ has common sense（常识） will do such a thing?A.which B.who C.whom D.that Who _____ has common sense will do such a thing?A.who B.whom C.which D.that 英语选择Who is that has made Mike ____he is now?A.wh英语选择Who is that has made Mike ____he is now?A.who.B.that.C.what.D.whom China has a lot of islands,one of____is TaiWanA.who B.whom C.that D.which 翻译：Who do you think is the greatest person that has ever lived? he is one of the worker who has been saved in that accident 翻译 Tom ia the only one____ has a computer.A that B who选择哪个? that girl talked to me who has just moved in.这个从句对吗 Dan Green is the only person _____ has a home like this.A That B .who I hardly understand. ___ he has told me. A. that B. what C. which D. who I hardly understand.___ he has told me.A.that B.what C.which D.who This world is so dirty,and who has qualified to say that sad? That is the girl who has a _____ sweet voice.(much) .Who ( ) has common sense will do such a thing为什么要用that而不用which who has an umbrella here ,please?I have(one ;it;this;that) ,Miss Lee. she has two brothers,_______are teachers.A.who B.that C.whom D./ who is more busy than he that has least to do? 是什么意思 who has no home?