问题描述：
定语从句 请告诉我为什么选这个
the story happened on a day___the weather was wet and cold.
A.when B.which C.in which D.on when
the story happende on a day__was wet and cold.
A.then B.on which C.which D./
the story happened on a day___the weather was wet and cold.
A.when B.which C.in which D.on when
the story happende on a day__was wet and cold.
A.then B.on which C.which D./
问题解答：
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