Question

Whatever is left over may be put into the refrigerator，_____

Answer 1

C

考查定语从句。句意：无论剩下什么东西，都可以放入冰箱中，在那儿可以保存两三个星期。“where it will keep for two or three weeks”是定语从句，关系副词where在从句中作地点状语。