The young artist had not expected to find such an ideal attic in that ______ building, which had been abandoned several years earlier by a sewing machine manufacturer.
 
【正确答案】 B
【答案解析】 同根词辨析。run-off“加赛”；run-down“破损的，破败的”；run-about“轻型小汽车”；run-away“逃跑者”。根据句意，只有run-down符合句意。故答案为B。