问题描述：
答对,
I will never forget the day ＿＿ we spent together.
A.which B.when C.on which D.where （选A,为什么?）
I will never forget the day ＿＿ we worked together.
A.which B.when C.in which D.where （选B,为什么?）
两道题差不多,为什么选的答案不一样?
I will never forget the day ＿＿ we spent together.
A.which B.when C.on which D.where （选A,为什么?）
I will never forget the day ＿＿ we worked together.
A.which B.when C.in which D.where （选B,为什么?）
两道题差不多,为什么选的答案不一样?
问题解答：
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