Not until the fish died in the river             how serious the pollution was.
#84077
A
did the villagers realize
B
the villagers realized
C
the villagers did realize
D
didn’t the villagers realize
推荐题目
Don’t be too rude to your father. Never in his life _____ in that way.
#83107
A
has he spoken to
B
he has spoken to
C
has he been spoken to
D
he has been spoken
---You forgot your pen when you went to have an exam.---My God, ____.
#83043
A
so did I
B
so I did
C
I did so
D
I so did
So mysteriously ______ missing that many puzzles wait to be solved. 
#79590
A
did Flight MH370 go
B
Flight MH370 went
C
does Flight MH370 go
D
had Flight MH370 gone