Not until all the fish died in the river      how specious the pollution was. 
#93485
A
did the villagers realize
B
that the villagers realized
C
the villagers did realize
D
didn’t the villagers realize
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      but he still can not understand it.
#92866
A
Told many times
B
Having been told many times
C
He has been told many times
D
Though he has been told many times
The key point is not who said the words, _____ they are true or not.
#95132
A
but whether
B
and whether
C
but why
D
and how