Some pictures of the river brought the days back to the day they swam in it.
A. when
B. that
C. who
D. where
网友回答
(答案→)A. when
B. that
C. who
D. where
解析：此题考查定语从句中关系词的选择。从句中先行词为the days，且从句中缺时间状语，故选when。此题易误选D项where，where在从句中充当地点状语，但本句从句中已有地点状语in it (the river)，故选where成分重复；而that在从句中不能充当状语，故也不能选B。