________ you are responsible for the information, you must be very careful.
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A
Unless
B
While
C
Since
D
Though
推荐题目
The man, ____ is parked in front of our school, is a well-known politician.  
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A
whose white car      
B
of whom the white car  
C
of whose white car
D
the red car of his
If you keep on your research, you’ll find out the result _______.
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A
in time
B
at no time
C
on time
D
at the same time