[解析]
1.B细节理解题.根据The trousers on the clothes line are black.They are not new but clean.Are they Lily's clothes?No,they are Lucy's.可知,Lucy的裤子是黑色的.故选B
2.A细节理解题.根据There is a new hat on the clothes tree,but it's not Lily's,it's Lucy's.可知,Lucy的帽子在衣帽架上,故选A
3.C细节理解题.根据 There are no clothes on Lily's bed.可知Lily的床上没有衣服,故选C