The problem will appear____ a different welfare system will be created.
#67620
A
unless
B
whether
C
until
D
if
推荐题目
we can not figure out ____quit a number of insects ,birds ,and animals are dying out .
#73069
A
that
B
as
C
why
D
when
（2014山东省实验中学高三第二次模拟考试）10．He was very nervous in the contest．Otherwise，he _____________ the first prize．
#66676
A
will win
B
would win
C
would have won
D
had won
China’s New Food Act provides for a food recall system to producers have to stop production their food isn’t up to standards.
#71551
A
that; if
B
where; if
C
which; when
D
when; where
As you wander through the streets, you see thousands of masks but you have no idea_____ the faces behind them look like.
#67631
A
which
B
what
C
that
D
how