{"answers": "D", "options": ["f : although the traffic is not crowded at all , we should cancel our flight next .", "f : although we ca n't miss our flight , let 's talk to the policeman .", "f : since the traffic is not crowded at all , let 's visit the exhibition next .", "f : ok , let 's talk to the policeman ."], "article": "f : why is the traffic so heavy ? we might miss our flight . m : oh , i remember there is a large exhibition in front . f : then what are we supposed to do ? m : let 's ask the policeman standing over there .", "id": "train_6234"}