67. All flights ________ because of the terrible weather, they had to go there by train. (A)) having been canceled (B)) had been canceled (C)) having canceled (D)) were canceled

30. It can be inferred from the passage that ________. (A)) killing foxes with poison is illegal (B)) limiting the fox population is unnecessary (C)) hunting foxes with dogs is considered cruel and violent (D)) fox-hunting often leads to confrontation between the poor and the rich