Not until all the fish died in the river ( ) how polluted the water was. ( 章节：3 难度：2)
- A、did the people realize
- B、the people realized
- C、the people did realize
- D、didn’t the people realize
正确答案:A
答案解析:有
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Not until all the fish died in the river ( ) how polluted the water was. ( 章节：3 难度：2)
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