—Where did you meet your middle school teacher?
—It was in the supermarket I was doing some shopping with my son.
A. that
B. where
C. when
D. which
网友回答
A. that
(答案→)B. where
C. when
D. which
解析：试题分析：关系词的用法。此题很容易看成是强调结构而误选A。其实结合语境it是代指地方，用where来表示地点，引导定语从句。句意：——你在哪儿见到的你的初中老师啊？——在超市里，我和儿子在那儿购物呢。所以答案选B。