________ he could call the police, the thieves had run away with the suitcase, leaving him shocked and helpless.
#30292
A
Before
B
Until
C
Because
D
Unless
推荐题目
The road is covered with ice. I can’t understand they insist on going by bike.
#34239
A
why
B
when
C
how
D
whether
The best times to visit Shangri-la are spring and autumn ____ the temperature is at its mildest.
#32167
A
when
B
where
C
that
D
which
________ he can work abroad next year will depend on his parents' will.
#30304
A
That
B
When
C
What
D
Whether
—Have you seen Rose recently? — No．It’s five years _____ I met her．
#79849
A
since
B
after
C
when
D
before
________they visited the Science Museum，they showed great interest in everything they saw.
#30703
A
The first time
B
For the first time
C
At first
D
At the first time