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All flights ____ because of the snowstorm, many passengers could do nothing but take the train.

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have been canceled    having canceled    canceled    having been canceled  
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had been cancelled  were cancelled  have been cancelled  having been cancelled  
A.great many of    A.great number of   A.great deal of    The great number of  
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were    had been    being    having been  
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had been canceled   have been canceled   having been canceled   being canceled  
have put off  were put off   have been put off  having been put off  
reduced its service to some regions  reduced its service to all regions  reduced its Service to some areas while adding to some other regions  canceled all its services to Southeast Asian countries  

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