Is that the small town you often refer to?Right, just the one you know I used to

--- Is that the small town you often refer to?
--- Right, just the one you know I used to work for years.
A. that
B. which
C. where
D. what

A. thatB. which(答案→)C. whereD. what解析：考查定语从句。the one 为先行词，you know为插入语。I used to work for years.从句中缺少地点状语，所以选 where 。

这个问题我还想问问老师呢