He is the last person____I want to see in the world.

问题描述:

He is the last person____I want to see in the world.
怎么不用that,而是all the abvoe 答案错里?

因为前后是两个独立的句子,如果用that的话就表示上下文为同一句子,而这里的I表示是另一个句子的开头,因而用that的话就矛盾了.
此处也可用who