Our government has taken some measures to overcome the lack of electricity, but it may take some time _____ we have enough power．
#33827
A
since
B
after
C
unless
D
before
推荐题目
You can’t complain about being left out ______you don’t make any effort to share your joys and sorrows with others.
#31393
A
once
B
unless
C
when
D
though
_______ all of them are strong candidates, only one will be chosen for the post.
#31381
A
Since
B
If
C
As
D
While
, you should keep it a secret; or you will ruin our plan.
#30593
A
If asking
B
If asked
C
If to ask
D
If being asking
．______ the satellite launch drawing near, the research workers put their hearts to the test and always stayed up late.
#33637
A
As
B
Because
C
With
D
While