题目:
Not until all the fish in the river died _________ how serious the pollution was. [ ]
A. did the villagers realize
B. the villagers realized
C. the villagers did realize
D. didn't the villagers realize
答案:
答案:A
Not until all the fish in the river died _________ how serious the pollution was. [ ]
A. did the villagers realize
B. the villagers realized
C. the villagers did realize
D. didn't the villagers realize
答案:A