英语选择!When and where to build the new first aid center ______

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英语选择!
When and where to build the new first aid center _______ yet.
A.hasn't been decided B.don't decided
C.hasve't been decided D.aren't decided
并说明理由!

中文翻译：什么时候在什么地方修建新的第一急救中心（这件事情）还没有被决定.
语态：被动语态.这件事情需要被决定,但还没被决定.
时态：完成时.yet表明还没有,对现在有影响作用.
人称：第三人称.这件事可以看作第三人称.
主语：When and where to build the new first aid center
所以应该选择A.

英语选择!When and where to build the new first aid center ______ 英语单选题：When and where to build the new factory ______ yet? 11.When and where to build the new factory When and where to build the new bridge (has n When and where to build the new power station_ yet. When and where to build the new factory ____ yet. when and where to build the new factory__yet when and where to build the new factory___yet when and where WHEN AND WHERE TO BUILD THE FACTORY____YET?( ) when and where to build a new park in the city .to be disscu 1.When and where to build a new factory __yet/ when and where to build the new factory -------- yet A.isn't