It is the only time in history that two Nobel Prizes ________ to the same person.
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A
have been given
B
had been given
C
have given
D
will give
推荐题目
 we_______a film next week.
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A
would see
B
see
C
are seeing
D
are to be seen
With the development of science,more new technology      to the fields of IT.
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A
has introduced
B
is being introduced
C
is introduced
D
was introduced
The ambulance was just arriving, for a worker, who ______ the window on the second floor, fell off the window.
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A
had been repairing
B
was repairing
C
has been repairing
D
would be repairing