The city government is planning to build a factory to deal with the industry waste，but when and where to build it .
A. haven’t been decided
B. aren’t decided
C. hadn’t been decided
D. hasn’t been decided
网友回答
A. haven’t been decided
B. aren’t decided
C. hadn’t been decided
(答案→)D. hasn’t been decided
解析：考察主谓一致和被动语态。本题句子的主语是when and where to build it这是一个不定式结构在句中作主语，表示的是一件事情，故使用单数形式。句意：市政府计划建一个工厂来处理工业污水，但是何时何地来建设这个工厂还没有被确定。根据句意说明使用被动语态。故D正确。