题目内容：
Living in the northern part of the country has its problems,__________obtaining fresh water is not the least.
A．with which B．for which
C．of which
D．which
参考答案：【答案仅供学习，请勿对照自行用药等】
答案解析：
单选题：Living in the northern part of the country has its problems,
- 题目分类：专四
- 题目类型：单选题
- 号外号外：注册会员即送体验阅读点！
B．for which
C．of which
D．which