—Did you solve problem you were discussing at the meeting?
—No, we didn’t. It was difficult problem we had never met.
- A.the; the
- B.a; a
- C.the; a
- D.a; the
答案
正确答案：C
知识点：语音、冠词
第一空表特指the problem you were discussing：“你们正在讨论的这个问题”，用定冠词the；第二空表泛指a difficult problem“一个难题”，用不定冠词a。正确答案为C。
略
WORD格式（
