我的参考书上有这样一段话：

题目

我的参考书上有这样一段话：
先行词是表示时间的time,day等和表示地点的place,house等时,一定要注意分析从句的结构,如果缺少主语或宾语时,关系词应该用which或that,缺少时间状语或地点状语时,才能用when或where.
还有下面几个句子：
I"ll never forget the day when my hometown was liberated.
I"ll neve forget the days which/that we spent together last winter.
哪里缺少主语或宾语、时间状语或地点状语了?哪位大侠能指点一下究竟什么时候用which\that\when\where.
还有下面几个定语从句练习：
1.They want to develop a kind of dog-friendly food _____will help dog owenrs cool down their pets.
A.who B.what C.which D.whether
2.We used to study in the old building____was broken down last year.
A.which B.where C.what
3.Have you found the information about the famous people______you can use for the report?
A.who B.what C.whom D.which
我仍然不是很明白，但至少比以前要好。我会继续努力的。十分感谢3楼wangmumu1024 打了那么一长段，但我更能理解1楼的方法，也很感谢2、4楼。

答案

I'll never forget the day when my hometown was liberated.其实这句话有这么一个意思：On that day my home town was liberated.On that day时间状语,没有在原句的从句中体现出来.所以用when考虑这个句子Yesterda...