乌鲁木齐五十二中
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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1914

A: Did you solve _     problem you were discussing at the meeting?
B: No, we didn't. It was _     difficult problem we had never met.
A. the, the                       B. a, a                          C. the, a

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A: Did you solve _ problem you