题目内容
There _____ many kinds of birds around here, but now we seldom see them because of the air pollution. |
A. had B. used to have C. used to be D. are |
试题答案
C
相关题目
There _____ many kinds of birds around here,
but now we seldom see them because of the air pollution.
but now we seldom see them because of the air pollution.
[ ]
A. use to
B. use to have
C. used to be
D. are
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B. use to have
C. used to be
D. are