________ 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
He’d arrived20 minutesearly______I can have time for a cup of tea.
#80551
A
as soon as
B
as a result
C
in case
D
so that
The queen will visit the town in May, _____she will open the new hospital.
#79963
A
when
B
then
C
while
D
but
When the news came the war broke out, he decided, to serve in the army.
#32940
A
since
B
which
C
that
D
because
Don’t answer me with a simple “yes” or “no”. Explain ______possible.
#31242
A
whatever
B
whenever
C
whoever
D
however