{"answers": "C", "options": ["f : right . did you often go to work on foot ? and you never go to work by bus .", "f : did you usually go to work by bike ? i do n't think it benefit health .", "f : so you used to go to work by bike .", "f : you mean you used to go to work by bus rather than by bike ."], "article": "f : if i were you , i would go to work by bike . it 's good for health . m : uh , used to , but now by bus .", "id": "train_5208"}