题目内容：

为什么是please decide which is the answer
从句应该是陈述语态啊,为什么不是
please decide which one is the answer或please decide what the best answer is

优质解答

...which(做主语） is the answer
which(作定语） one is the answer
以上都可以,意思一样
please decide what the best answer is （句子本省没错,但如果有可供选择的范围,用what 就不对了.在没有选择范围时用what