根据短文内容，判断下列句子正误。

Tom's grandfather, Mr. Hill is a taxi driver. Mr. Hill likes his job very much. He knows the name of every road and street in the city. He likes helping people. He often helps people from other cities find their way. He is happy to talk with passengers (乘客). He tells them something about his job and the city. He is sixty years old this year. But he looks young. He always says, "I am a happy driver".