There was used to be plenty of trees on both sides of the river.改_英语解答

There was used to be plenty of trees on both sides of the river.
改乘WERE　还是直接去了

人气：266 ℃　时间：2019-10-23 11:33:57

解答

直接去掉
因为used to be里的be已经和开头的there组成there be 句型了