阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。

One day, a boy is on his way to a shop. When he is crossing the street, a dirty dog walks after (he). It is walking slowly and difficultly, it is really hungry. Maybe it has nothing (eat). This little boy is nice and kind. So he lets it go home him. The boy gives it some food and (water) and lets the dog stay in the house. He also gives it name: Elf.

A few days later, Elf is well. It looks forward to (live) in the new home. Elf often (stay) in the garden. Looking after the chickens is one of its favorite (thing). Elf is a lucky dog, because a (friend) boy helps him. And now it does what a dog can do to be a helpful family member.