{"answers": "C", "options": ["f : yes , it is convenience and cheap by subway .", "f : yes , it is crowded and expensive by subway .", "f : yes , it is convenient but a bit expensive by subway .", "f : yes , it is convenient but a bit expensive by subway . so i never take the subway to work ."], "article": "m : hi , jesse , i thought you 'd be on your way to work by now , are you taking the day off ? f : no no . i do n't have to leave home so early , since i started traveling by subway . m : oh , is that so ? f : yes , i can spend an extra half hour in bed . have breakfast at home and still be on time for work . it 's really very good . i mean , this subway . m : is n't it expensive ? f : well , yes , a bit , but it 's so convenient . my office is not far from the station there . m : you seem to be completely sold on the subway .", "id": "train_1731"}