问题补充：
It is the photo we took years ago we were at university often calls up my memories of my college life.
A. that; that
B. when; where
C. when; that
D. that; where
答案：
A. that; that
B. when; where
(答案→)C. when; that
D. that; where
解析：考查强调句型和定语从句。 we were at university是先行词years ago的定语从句，且从句缺少时间状语，所以用when引导；It is the photo we took years ago often calls up my memories of my college life.是强调句型，强调句子主语the photo，所以用that引导。选C。
