题目内容：
The fort was built on a steep hill, （）it was easy to watch the water for invaders.
A.where
B.in which
C.from which
D.for which
参考答案：
选择题：The fort was built on a steep hill, （）it was easy to watch t
- 题目分类：中国大学MOOC慕课
- 题目类型：选择题
- 号外号外：注册会员即送体验阅读点！