Experts are trying to work out a plan to deal with the problems caused by global warming ______ it is too late.
#31459
A
when
B
if
C
before
D
until
推荐题目
____we have lost all the money, it’s no use turning on me and saying it’s all my fault.
#31241
A
After
B
Although
C
Unless
D
Now that
Please take down my telephone number ________ something important happens.
#31553
A
in case
B
now that
C
even though
D
as if
_______ you don’t have much experience in this field, why don’t you ask Professor Wang for advice?
#31166
A
Unless
B
In case
C
Even if
D
Now that