Since the band announced the release of their new album, the phone hasn't stopped ringing. Many fans ________ to ask about the exact time.
#105307
A
were calling
B
had called
C
are calling
D
call
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Although the causes of cancer ____we do not yet have any practical way to prevent it.
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A
are being uncovered
B
have been uncovering
C
are uncovering
D
have uncovered
 I’m glad to see your health ______ after the operation.
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A
picking up
B
setting up
C
taking up
D
getting up
8.Customers are asked to make sure that they ____ the right change before leaving the shop.  
#105342
A
will give
B
have been given
C
have given
D
will be given