When and where to go for the on-salary holiday yet.A. are not decidedB. have not been dec

问题补充：

When and where to go for the on-salary holiday yet.

A. are not decided

B. have not been decided

C. is not being decided

D. has not been decided

答案：

A. are not decided

B. have not been decided

C. is not being decided

(答案→)D. has not been decided

解析：考查时态。句意：什么时候去哪儿过这个带薪的假期还没有决定。可知描述的是现在已完成的动作，主语When and where为抽象事物，不可数，故助动词用单数形式，选D。