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
--- I drove to Zhuhai for the air show last week.--- Is that ____ you had a few days off?
#30621
A
why
B
when
C
what
D
where
The traditional view is ________ we sleep because our brain is “programmed” to make us do so.
#29975
A
when
B
why
C
whether
D
that
People in Shaanxi are proud of they have achieved in the past ten years.
#31071
A
what
B
which
C
that
D
how
She stepped into the bedroom quietly _____she might wake up her roommates.
#79933
A
for fear that
B
so long as
C
on condition that
D
in order that
Some of the people often ask the same question the air has been polluted.
#30604
A
whether
B
if
C
that
D
where