学帮网It has been proved ____taking exercise regularly does good to one’s health
来源：学生作业学帮网 编辑：学帮网 时间：2024/06/30 19:53:20
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