Not until all the fish die in the river ____ how serious the pollution was.
#81114
A
did the villagers realize
B
the villagers realized
C
the villagers did realize
D
didn’t the villagers realize
推荐题目
They finally managed to climb to the top,but __then. 
#83935
A
went the children down the hill
B
down the hill did the children go
C
down the hill went the children
D
down the hill the children went
These problems, __________, will seriously affect the growth of teenagers and even the nation’s future.    
#82644
A
solved properly
B
if solved properly
C
not if properly solved
D
if not solved properly
–My room gets very cold at night.--__________.
#81946
A
So is mine.
B
So mine is
C
So does mine
D
So mine does