The problem will appear____ a different welfare system will be created.
#67620
A
unless
B
whether
C
until
D
if
推荐题目
My sister is determined. ________ she has made up her mind, nothing can change it.
#67562
A
Though
B
Once
C
Unless
D
Until
In my opinion, life in the twenty-first century is much easier than ___________.
#67724
A
that used to be
B
it is used to
C
it was used to
D
it used to be
There were many more people who got injured in the big fire than _______.
#73294
A
was reported
B
it was reported
C
were reported
D
they were reported