—Where did you see your friend?
—It was in the super market I was doing shopping.
Awhere
B. which
C. that
D. when
网友回答
(答案→)A. where
B. which
C. that
D. when
解析：考查定语从句：句意：你在哪里见到你的朋友的？--是在我购物的超市。这是定语从句，先行词是in the super market，定语从句中缺少地点状语，用where引导定语从句，考生容易错选成that，以为是强调句，但是这句话是省略句，完整的是It was in the super market where I was doing shopping that I saw my friends.所以强调句是被省略了。选A。