Little Tom down the street calls our dog "The keep dog".Zip is a sheep dog. But when Tom tries to say" Seep", it comes out "keep". And in a way Tom is right. Zip is always bringing things hoem for us to keep! I'll tell you about some of them.Zip's first present was a shoe. It was made of green silk.We didn't know how Zip found the shoe. But after a moment Mary, my big sister, told me the shoe had a strange smell. I nodded( 点头 )and held my nose. "What do you think it is?""It smells like something for cleaning. I think someone tried to clean a spot ( 污点 ) off the shoe. Then he put it at thedoor to dry.""Along came Zip. And good-bye shoe!" I said."We should take it back.""We can't ".said my sistter."Maybe little Tom is right," Mary said. "Maybe Zip is a keep dog!"