(2010·福建)The girl had hardly rung the bell ________ the door was opened suddenly，and her friend rushed out to greet her.
#30449
A
before
B
until
C
as
D
since
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--- I drove to Zhuhai for the air show last week.--- Is that ____ you had a few days off?
#30621
A
why
B
when
C
what
D
where
The meeting had been on for half an hour _______ Miss Yang turned up.
#80164
A
while
B
As
C
Unless
D
before
________ I meet him, I always think of the things which happened between us.
#33603
A
Every time
B
For the time
C
The night
D
At no time