When and where to build the new factory ____ yet.

问题描述:

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.