Chen Xiang wondered where I have been 和 Li Lei said that the moon went round the earth 怎么改
问题描述：
Chen Xiang wondered where I have been 和 Li Lei said that the moon went round the earth 怎么改
答
Chen Xiang wondered where I had been.过去的过去用过去完成时
Li Lei said that the moon goes around the earth.普遍真理用一般现在时