[-A27] The last time we had great fun was ______ we were visiting the Water Park.

问题描述:

[-A27] The last time we had great fun was ______ we were visiting the Water Park.
A.where
B.how
C.when
D.why
翻译并分析

C先行词是the last time ,所以要用when引导后面的定语从句.
句子结构是主语the last time,we had great fun作定语,was做谓语
when we were visiting the water park定语从句做宾语,