问题补充:
There used to a clean river in the village, but now it’s dirty.
A. be
B. being
C. have
D. having
答案:
(答案→)A. be
B. being
C. have
D. having
解析: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
时间:2019-07-29 13:58:30
There used to a clean river in the village, but now it’s dirty.
A. be
B. being
C. have
D. having
(答案→)A. be
B. being
C. have
D. having
解析: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