when and where has not been decided为什么是用has 而不是 have

when and where还是where and when when and where has not been decided为什么是用has 而不是 have when and where to go for holiday have not been decided yet.这句是用have还是has when and where to go for my holiday__not been decided yet.填have?has?为什么? when and where to bulid the new factory___yet A.has not decided B is not decided when and where to build another bridge ___ still unknown A.is B has been 英语,When and where to go for the holiday has not been decided为什么用has 不用have When and where的意思 who and who?when and where? WHEN AND WHERE TO BUILD THE FACTORY____YET?( )A.IS NOT DECIDEDB.ARE NOT DECIDEDC.HAS NOT DECIDEDD.HAVE NOT DECIDED when and where to build the new factory__ yet.is not decided has not decided谓语动词为什么用单数? When and where this took place ____ still unknown.A：has B：is C：were D：are when and where to build the new factory / yet.a:is not decided; b；has not decided; when and where to hold the sports meeting haue not been decided yet 请问为什么have 要改为has where and when the accident .单项选择A has ,happened B was ,happenedC is ,happening D did happen when and where to build the new school _______.（要解析）A.is not decided B.has not decided When and where to build the new power plant ___yet A has not decided C is not decided When and where to build the new bridge (has nWhen and where to build the new bridge (has not been decided)yet.为什么括号里要填has not been decided