英语大侠请进来 帮帮忙 不回答问题的请勿打扰 好的加分~~~万分感谢

1. vacation可做名词和动词，做名词是可数的，go on vacation是固定搭配 --go on a vacation是具体的一个假期
2. kind加s的话就得把is 变成are
3. 有的，
关系副词
　　关系副词：在句中作状语 关系副词=介词+关系代词
　　why=for which where=in/ at/ on/ ... which (介词同先行词搭配)
when=during/ on/ in/ ... which (介词同先行词搭配)
　1）介词后面的关系代词不能省略。 2）that前不能有介词。
　3） 某些在从句中充当时间，地点或原因状语的"介词+关系词"结构可以同关系副词when ,where和why 互换。　
　　This is the house in which I lived two years ago.　
　　This is the house where I lived two years ago.　
　　Do you remember the day on which you joined our club?　
　　Do you remember the day when you joined our club?
　　This is the reason why he came late. 　This is the reason for which he came late.
4.是的
5. 名词

最后一个是B