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题目内容
（许昌大学大学英语3(专升本)）
(单选题) The three ______ working telephone lines are quite busy following the earthquake.(本题1.0分)
A、 remaining
B、 remained
C、 having remained
D、 remains
A、 remaining
B、 remained
C、 having remained
D、 remains
参考答案
