______ environmental damage is done, it takes many years for the ecosystem to recover.
#73217
A
Even if
B
If only
C
While
D
Once
推荐题目
With Halloween approaching, there exists a real concern among parents and teachers __________ trick or treating will become a seriously anti-social activity.
#69248
A
whether
B
what
C
that
D
how
I won’t give in ________ great difficulties I come across in my life.
#66892
A
however
B
whatever
C
whichever
D
wherever
No matter how fast we worked, ____.
#73128
A
we couldn’t catch up with them
B
and we couldn’t catch up with them
C
so we couldn’t catch up with them
D
but we couldn’t catch up with them
In his lecture, the professor referred to the belief ________ the elderly are wise, ________ is particularly dominant(支配的) in Chinese culture.
#68077
A
that; one
B
that; one that
C
which; which
D
that; that
As to his criticism, I don’t mind it in the least, but______is how he does it that I can’t take.
#73634
A
which
B
that
C
this
D
it