Has all_can be done Awhat,done Bthat,been done Cthat,be done Dwhat,already done

Has all_can be done Awhat,done Bthat,been done Cthat,be done Dwhat,already done can be done has been Everything that can be done has been done 中can be done has been done all that can be done has been done. is done,was done的被动语态是?is being done,was being done,has been done,had been done,will be done的被动语态是? all that can be done has been done为什么用HAS all that can be done has been done 为什么要用has,不用have 87.When your homework____you may go home.A.has done B.is done C.are done D.will be done You can play when your work__ A.Will be done B.is done C.has done D.was done You can go when you work___________A has done B is done C wil be done D was done 19.All that can be done .　　A.have been done B.have done C.has been done D.has done顺便,翻译一下这句话吧 All__can be done has been done.A.that B.who C.whAll__can be done has been done.A.thatB.whoC.whichD.of which选什么,句子意思是? all that can be done has been done.中的that为all that can be done has been done.中的that为什么不能用which替换? what has been done can not be undone America has never been about what can be done for All that can be done___A.have been done B.have done C.has been done D.has done为什么选C怎么解释? All that can be done___________A.has done B.has been done C.have done D.have been done 请选入合适的选项.并解释原因, —How are things getting on?—All that can be done____.A.has been done B.have been done C.has done D.have done 十万火急what should be done have benn done为什么要将have改为has?