问题补充：
--- Where did you find Lily?
--- It is in the bookstore she is working I found her.
A. in which; where
B. which; that
C. where; that
D. that; where
答案：
A. in which; where
B. which; that
(答案→)C. where; that
D. that; where
解析：考查强调句型和定语从句。基本结构：It is/was 被强调成分 that/who 其它成分；如果把it is/was…that/who去掉，句子仍然成立。本题的定语从句where she is working修饰先行词the bookstore,这个定语从句的结构很完整，所以所以关系副词。句意：—你在哪里找到lily的？—就是在她工作的那家书店里我找到她的。
