sad      lucky      in      their       once

Tad is a very special boy． He must sit （1）　　 a wheelchair every day． He was born with a disease that made him unable to walk． Some boys would be （2）　　 or angry about that， but not Tad． Instead， he looks for ways to make people happy． He called the Green Oaks School for the Blind and asked if he could volunteer． They said， "Sure!" Tad went to that school at （3）　　． Every day， he plays games with the children． He reads books to them． Sometimes he helps them with （4）　　 schoolwork． The children at the school call Tad Lucky because they feel so （5）　　 to have him as a friend． That makes Tad very happy!