You cannot take back your words _________ they are out of your mouth.
#30113
A
before
B
whether
C
once
D
while
推荐题目
We should try every way to develop education, it means slowing down in other fields.
#32319
A
in case
B
even if
C
only if
D
so that
She is popular among her classmates, ________________ she can be annoying at times.
#33574
A
in case
B
as if
C
even if
D
so that
Last night I was watching some news about the American financial crises(金融危机) on TV _______ the power went off.
#31443
A
while
B
as
C
when
D
during
It is not immediately clear__________ the financial crisis will soon be over.
#34723
A
since
B
what
C
when
D
whether
To improve the quality of our products ,we asks for suggestions had used the products.
#33387
A
whoever
B
who
C
whichever
D
which