Question

That is the house ________ I lived twenty years ago.

A. which
B. who
C. in which
D. at which

Answer 1

答案C
点拨：此题考查定语从句的用法。题意是“那就是我20年前住过的房子。”修饰the house的关系词是which，故先排除B，关系代词作live的宾语，因为live是不及物动词，所以要接介词，故再排除A项；“住在某地”是live in someplace，介词用in。