问题补充:
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
答案:
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。