When and where to build the new factory ____ yet.When and where to build the new factory ____ yet.A.is not decided B.are not decided C.has not decided D.have not decided看到yet要考虑完成时吗?

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Whenandwheretobuildthenewfactory____yet.Whenandwheretobuildthenewfactory____yet.A.isnotdecidedB.aren

When and where to build the new factory ____ yet.When and where to build the new factory ____ yet.A.is not decided B.are not decided C.has not decided D.have not decided看到yet要考虑完成时吗?
When and where to build the new factory ____ yet.
When and where to build the new factory ____ yet.
A.is not decided B.are not decided C.has not decided D.have not decided
看到yet要考虑完成时吗?

When and where to build the new factory ____ yet.When and where to build the new factory ____ yet.A.is not decided B.are not decided C.has not decided D.have not decided看到yet要考虑完成时吗?
A
前面是疑问词+不定式结构作主语,谓语动词用第三人称单数,yet一般与现在完成时态连用,但是这里的C答案要改成:has not been decided要用被动语态.

选a
c选项如果改成被动语态就对了

A. is not decided, 根据最靠近谓语的主语选择is
如果是C和D则需要加been