{"answers": "C", "options": ["f : oh , you visited some friends in switzerland , did n't you ? then you have been to switzerland .", "f : since you have been to australia , why did n't you go to sydney ?", "f : in other words , you have been to australia ! i want to go , too .", "f : you mean , you 've been to thailand , and you did n't come back until this morning , did you ?"], "article": "f : i 'm surprised to see you here . jeremy told me that you were on vacation . m : yeah . we were visiting some relatives in sydney , but we return last night .", "id": "train_2483"}