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
网友回答
(答案→)A. is not decided
B. are not decided
C. has not decided
D. have not decided
解析：考查交际用语。When and where作主语时，谓语动词用单数。根据上下文可知是表示被动。故A正确。