阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。

 

Look at the picture. This is Lucky. Lucky is the name a dog. Lucky's parents are big, he is small. His (leg) are very short. He is only 21.3cm tall.

  Lucky is not only a dog but also a good friend to children. Do you know Lucky works? He works in a children's hospital. He (save) people's lives, too. Lucky's job is to help children feel good and let them (forget) the fears(恐惧) of the hospital. Lucky is good at (play) with children. “He's very cute and (friend). I love him very much. With (he) help, the hospital isn't a scary place for me,” Jeff, eight-year-old boy, says. He often plays with Lucky when he is in hospital and Lucky brings him great fun.