I went into the living room where we talked for ___.

題目：

I went into the living room where we talked for ___.
a) two hours or so
b) some hours
書上答案是a,爲啥b不能選呢

解答：

A
some hours 是錯誤的
couple hours才正確
幾個小時
some不能用來形容時間
couple minutes,couple seconds ,couple hours