All his attempts to unlock the door were , because he was using the wrong key.
#27426
A
in return
B
in vain
C
in doubt
D
in time
推荐题目
I am concerned ____ it that I can’t concentrate ____ my work because of headache.
#25624
A
of; on
B
of; of
C
about; on
D
about; to
The Yangtze River passes all the way through the province ______ its long journey _______ the coast.
#26822
A
on; of
B
on; to
C
to; to
D
to; of
To be well-informed , we should be ______ communication _____ each other about what happens to us.
#26341
A
on ; for
B
in; for
C
with; by
D
in; with
___will the ambulance come. Take it easy and your mom will be OK.
#27039
A
At once
B
In no time
C
Right now
D
The instant
sales of cars up by 30% last year, the traffic in Beijing has become increasingly terrible.
#26135
A
With
B
Since
C
For
D
As