The key to all of this is the realization____he is not as attached to his ideas as his fellow colleague.A what B which C that D while
热心网友
that 主语：key 谓语：is 表语：realization 后面的是表语的同位语eg. The news that he will go to Paris came to us yesterday. 其中that he will go to Paris是同位语。
热心网友
C. 这是同位语从句,是对所修饰的词进行解释,说明该词的内容.同位语从句不能用which连接,只用that 连接.
热心网友
that.同位语从句。同位语从句前的名词一般是抽象名词,news,ideas,thought,rumour,fact,possibilityIdon' ereisapossibilitythathewillbeafamousartistinthefuture.
热心网友
that同位语从句