it was they that/who cleaned the classroom yesterday.我说是翻译

it was they that/who cleaned the classroom yesterday.我说是翻译 求详解英语：Did they all pass this english examination?no,it was so difficult that＿＿＿only three of them who passed it.A there was B that wasC were they D it was Jane and John still remember that IT WAS _they__. thier parents ,who encourged them tocontinue their education.为什么填they? 62.Jane and Tim still remember that it was ________,their parents,who encouraged then to continue their education.A) these B) who C) they D) whom为什么 so i didn't ask who it was,为什么不用Who that was !为什么要用who it was It is(was) +强调部分+that (who)+从句 Who was ____called this morning?为什么用it that? Do you know____had reported the accident to the police?A.who it was that B.that it was who 17__ she gave the postcards to?AWhom it was that B.Who it was that C.Who was it that 强调句选择 Is __ who helps with your math?A .it we B.that they C.it him D.it Mile 选什么?为什么?( )Is __ who helps with your math?A .it we B.that they C.it him D.it Mike ( ) it was__ she was ill __ she had to stay at home .A.as……so B f 强调句it is（was) .that/who,其中it is（was)能不能写成it's/it was不能缩写么? Was _Bill _played basketball very much.a.that,that b.that ,it c.it ,who d.this ,who The police are sure that the woman was ______ ,but they haven't found out who did it yet.A.murdered B.die C.died D.murdering -who broke the window?-_____the two boys.A.it was B.they are C.that is D.there were为什么选A they asked who the man was that was waliking the dog.为什么有两个was,为什么有that they asked who the man was that was walking the dog.为什么有两个was?为什么有that It was only after many tries that they finally succeeded （ ）you met the Englishman?A.Where it was B.who it was that C.Where was it that D.Were was that