问题
选择题
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
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
搜题请搜索小程序“爱下问搜题”
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
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
