There______many birds around here,but now we can't see them any more.
问题描述:
There______many birds around here,but now we can't see them any more.
A.use to B.used to have C.used to be D.are
选择哪项?为什么?
答
选B
used to 过去(常常)
used to be 过去曾是.
used to have 过去曾有.
D 若改为were也可