The new system needs to be in operation for five months ________ it can be updated.
#30274
A
as
B
while
C
before
D
once
推荐题目
It's not necessary to explain the truth _____ there is spring wind, there is green grass．
#30388
A
which wherever
B
that which
C
which when
D
that wherever
__________I don’t like the film, the leading actor’s performance gave me a deep impression.
#31889
A
When
B
Since
C
If
D
While
(2013·江西两所名校二模)The progress of the work will depend on what the weather conditions are and ________ modern the equipment is.
#30415
A
how
B
whether
C
what
D
which
—Did you return Fred’s call? —I didn’t need to ____ I’ll see him tomorrow.
#79824
A
though
B
unless
C
when
D
Because
Maria looked around on the playground _______ looking for something.
#32213
A
even though
B
even if
C
only if
D
as if