题目内容：

Yesterday I saw her walking in the park with her dog () closely behind.
A.followed B.following C.be followed D.being followed

优质解答

选B
folllowing 现在分词表示主动 因为dog和follow是主谓（主动）关系,而不是被动关系.
句子意思为：昨天我看见她正在公园里散步,她的狗紧跟在她身后.