He works hard.He is full of _(condfident).

问题描述:

He works hard.He is full of _(condfident).
用括号内所给单词的适当形式填空
还有要写出相关的英语知识就是说为什么要这样填

confidence
of后面要加名词,而confident是形容词
对应名词形式就是confidence