Question

_____I think of the happy old days, I can’t help smiling

1. A.
   Every time that
2. B.
   Every time as
3. C.
   Every time when
4. D.
   Every time

Answer 1

D
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。