中国石油大学 / 中石油
正确率:100%
3. Not until all the fish died in the river, _____ 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
A、did the villagers realize
B、the villagers realized
C、the villagers did realize
D、didn’t the villagers realize
参考答案:
佳题速递: