they want to make it clear to the public____they do an important job为什么用that不用where
问题描述：
they want to make it clear to the public____they do an important job为什么用that不用where
答
it 是形式宾语,而that+...从句是真正的宾语,是it指代的内容.
是宾语从句,而不是定语从句等.