题目内容：

The freezing point is the temperature __________ water changes into ice.
A.at which B.on that C.in which D.of what 是否可以用where 代替呢?

优质解答

可以用where代替.当先行词是point,case,stage,system,activity,occasion等,且定语从句中的关系词在从句中作状语时,该关系代词用where引导.where也可以根据具体情况换成"介词+which“的结构.这个where可不像楼上所理...