I think of the happy old days, I can’t help smiling.
A. Every time that
B. Every time as
C. Every time when
D. Every time
网友回答
A. Every time that
B. Every time as
C. Every time when
(答案→)D. Every time
解析：连词辨析。句意：每次我想起那些过去幸福的日子，我都禁不住笑起来。可知上文为下文的逻辑时间状语，故选C.when当……时。