问题描述：
_____ for the free tickets,I would not have gone to the film so often.
_____ for the free tickets,I would not have gone to the film so often.
A if it is not
B had it not been
C were it not
为什么要一个be（been）
_____ for the free tickets,I would not have gone to the film so often.
A if it is not
B had it not been
C were it not
为什么要一个be（been）
问题解答：
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