______ plenty of water in this river.A.There used to being B.there used to beC.There is used to beingD.There was used to be

分类: 作业答案 • 2022-07-22 23:26:28

问题描述：

______ plenty of water in this river.
A.There used to being
B.there used to be
C.There is used to being
D.There was used to be

答