——Where did you e across our chemistry teacher ?
------ It was in the supermarket I purchased mooncakes.
A. that
B. which
C. where
D. when
网友回答
A. that
B. which
(答案→)C. where
D. when
解析:本题考查强调句的省略用法,被强调部分是一个定语从句,在mooncakes后省略了that I came across our chemistry teacher.