Before us lies the biggest room, with things like guns, dolls and old clothes.
A. filling
B. filled
C. being filled
D. having been filled
网友回答
A. filling
(答案→)B. filled
C. being filled
D. having been filled
解析：考查过去分词做定语，前面的句子是倒装句，提前地点状语，主语是the biggest room，过去分词filled with things修饰room，因为是be filled with、…，句意是：我们前面的是最大的房间，里面装满了枪，玩具和旧衣服。选B。