I enjoyed the pictures of the river and they brought back the old days _____ I swam in it.
A. when B. that C. who D. where
I enjoyed the pictures of the river and they brought back the old days _____ I swam in it.
A. when B. that C. who D. where
A。本句中先行词为the old days，后面应使用关系副词when引导定语从句，when在句子中作时间状语。