When and where to go for the holiday__?___yet.

题目

When and where to go for the holiday__?___yet.
请问问号那里填写什么.

答案

"has not been desided"
首先根据"yet(至今)"判断应用完成时
然后,句子中问的是"when and where",所指同一概念,所以用"has",若问的是"when to leave and where to go"则另当别论
最后是人来决定这个事情,所以用被动态