{"answers": "C", "options": ["f : he has read carefully , otherwise he would n't dressed in the right clothes , and it is really surprising that he knew almost everyone .", "f : i 'm afraid he did n't . but it was lucky that no one noticed his casual clothing .", "f : i 'm afriad he did n't . could you remember his terrible casual clothes ?", "f : he did n't receive the invitation card . but it was fortunate that he dressed in formal clothes ."], "article": "f : john really surprised me yesterday . m : i 'll bet . he caught everybody 's eye at the charity party because he was wearing jeans , and everyone else was dressed so formally . did n't he read the instructions on the invitation ?", "id": "train_6625"}