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题目内容
（华北水利-土木工程-大学英语（3））
9(5.0分)
Some kinds of birds which were once a(n)______ sight are now becoming rare.
A)
cheery
B)
common
C)
often
D)
ordinary
Some kinds of birds which were once a(n)______ sight are now becoming rare.
A)
cheery
B)
common
C)
often
D)
ordinary
参考答案