Two days is not enough for me to finish the work,I need ____ day.

问题描述:

Two days is not enough for me to finish the work,I need ____ day.
A.a third B.a few C.some D.the third
请详细分析所选答案的原因,并分析考察的知识点,

a
a 加序数词=another
所以a third =another
意思是 我还需要一天