作业帮It has been proved ____taking exercise regularly does good to one’s health
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/24 23:35:18
It has been proved ____taking exercise regularly does good to one’s health
that
it形式主语,后taking exercise regularly does good to one’s health 为真正主语,防止头重脚轻,所以用it 来当形式主语
that