They are having a (Chtirstmas)party tomorrow.对括号内部分提问___ ___ ___ they having tomorrow?
问题描述：
They are having a (Chtirstmas)party tomorrow.
对括号内部分提问
___ ___ ___ they having tomorrow?
答
which party are
答
What party are
答
what party are
我觉得用what 比which好
因为提问的人并没有一个可以选择的范围
若有范围,用which
否则就是what
答
what party are they having tomorrow?