a few more days很奇怪的用法

问题描述:

a few more days很奇怪的用法
You have stayed in this school for several days,haven't you?
Yes,I think I'll be here for _______ more days.
A.few B.a few C.little D.a little
正确答案是B,我觉得应该用D,a little用来修饰more,a few more days用法很奇怪...

a few days 是几天的意思
a few more days 是多几天的意思
day 是可数名词 所以要用 a few