帮帮忙解释为何选这个答案?

问题描述:

帮帮忙解释为何选这个答案?
15.______ little water is not enough for _______ many people.
A. Such ,so B.Such ,such C. So,soD. So ,such
答案: C 翻译: 这一点点水不够那么多人用.解释:

so后面加形容词,such加名词