---Are you firmly against any independence move by Taiwan?
---Of course. That’s our basic interest lies.
A. why
B. when
C. where
D. in which
网友回答
A. why
B. when
(答案→)C. where
D. in which
解析：句意：——你坚决反对任何的台湾独立运动吗？——当然。这是我们的根本利益所在。where 引导表语从句，并在从句中作lie 的状语。所以选C。