________ the jewels were locked in a strong box，the thieves stole them without any difficulty.
#30445
A
If
B
Unless
C
Although
D
Because
推荐题目
I hate traveling by air ______ you usually have to wait for hours before the plane takes off.
#31027
A
because
B
though
C
until
D
unless
We do jobs_____they need to be done and that could be early in the morning or late at night.
#34066
A
that
B
which
C
when
D
how
____ I can see, there is only one possible way to keep away from danger.
#31197
A
As long as
B
As far as
C
Just as
D
Even if
We don’t doubt ________ the boy can ________ the angry teacher.
#34308
A
if; apologize for
B
whether; apologize to
C
that; apologize to
D
what; apologize
Returning from Guilin, he told me about the scenery ________ interested him there.
#30849
A
where
B
what
C
which
D
who