whichadj.哪一个;哪一些pron.哪一个;哪些
which of the two两个中的哪一个
Which woman?旧式三层甲板,有三层的东西
Which train?三废
Which corner?三个面向
Which letter?adj.三色的
Which is mine?三级
Which is more?三车道
Which country?三次浪潮
Which theater?三篇诗歌
Which company?三个面向