英语I have always been an optimist and I supposed that is rooted in my belief that the power of creativity and intelligence can make the world a better placce.I supposed that中的that 是宾语从句吗?in my belief 什么从句请问在第一个宾语从句中 的that 是引导词吗，如果的是的话应该不做成分的，可是句子中that应该是做主语的吧。

英语
I have always been an optimist and I supposed that is rooted in my belief that the power of creativity and intelligence can make the world a better placce.
I supposed that中的that 是宾语从句吗?in my belief 什么从句
请问在第一个宾语从句中 的that 是引导词吗，如果的是的话应该不做成分的，可是句子中that应该是做主语的吧。