问题补充：
---Where did you first meet your boyfriend?
---It was in the department store he worked.
A. which
B. that
C. what
D. where
答案：
A. which
B. that
C. what
(答案→)D. where
解析：考察定语从句和强调句型。本定语从句的先行词是store,定语从句主语是he,谓语动词是work，是一个不及物动词，不需要加宾语。句子很完整，故使用关系副词。Store是指时间的，故D。本题后半句省略了that you met your boyfriend.句意：—你是在什么地方第一次遇见你的男朋友的？—就是在他工作的商店里我第一次遇见了他的。
