Someone called me up in the middle of the night, but he hung up ______ I could answer the phone.
#31445
A
as
B
since
C
until
D
before
推荐题目
I was about to give up my effort to solve a problem __________ a good idea struck me.
#30835
A
when
B
while
C
until
D
before
We didn’t know you were in trouble at that time, _______ we would have given you a hand.
#31581
A
therefore
B
unless
C
otherwise
D
so
A ban is called for by the residents __________ people shouldn’t walk dogs in that square．
#30198
A
what
B
whether
C
why
D
that
Perhaps the day will come ____ people will be able to breathe clean air in cities．
#32785
A
when
B
while
C
as
D
since