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题目内容
（陇东学院-大学英语(专升本)）
13. (单选题) We___it without your help.(本题1.0分)
A、 couldn.t have done
B、 couldn.t do
C、 could have done
D、 could haven.t done
A、 couldn.t have done
B、 couldn.t do
C、 could have done
D、 could haven.t done
参考答案
