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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
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科目：初中英語(yǔ) 來(lái)源：同步題 題型：單選題

There _____ many kinds of birds around here,
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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科目：初中英語(yǔ) 來(lái)源：0103 期中題 題型：單選題

There _____ many kinds of birds around here, but now we seldom see them because of the
air pollution.
[     ]
A. use to
B. use to have
C. use to be
D. are

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科目：初中英語(yǔ) 來(lái)源：期末題 題型：單選題

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

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