题目内容
There used to ________ a clean river in the village, but now it’s dirty.
A.be | B.being | C.have | D.having |
A
此题考查there be结构的一般过去时的基本结构。There were/was或there used to be

练习册系列答案
相关题目
题目内容
A.be | B.being | C.have | D.having |