高中英语短文改错中这句话这样改对吗
****ThenwevisitedtheHistoryMuseum.WeobservedalotofvaluablethingsinthemandwelearnedalotaboutChinesehistory.
我把them→there答案是them→it我把about→of答案显示不用改.
为什么啊我改的对吗求指导