This problem may lead to more serious ones if ______ unsolved.
#67907
A
making
B
remained
C
keeping
D
left
推荐题目
Parents should take seriously their children’s requests for sunglasses _______ eye protection is necessary in sunny weather.
#72833
A
because
B
through
C
unless
D
if
It’s not necessary to explain the truth________ there are air, water and sunlight , there are living things.
#71760
A
in wherever
B
that wherever
C
which
D
that
The government officials met the workers and engineers working on the stadium, most____ were migrant workers．
#69120
A
of which
B
of who
C
of whom
D
of them
In his speech, Premier Wen Jiabao points out that creativity is __it takes to keep a nation highly competitive .
#73504
A
how
B
what
C
which
D
that
Everything was placed exactly ___________he wanted it for the graduation ceremony.
#68392
A
while
B
when
C
where
D
though