Read the passage and fill in the blanks with proper words (在短文的空格内填入适当的词，使其内容通顺，每空格限填一词，首字母已给): 

Jack is a middle school student. H sister is not a student. She is o four. Jack and his sister like t father and mother. Jack's father is a bus driver. Their neighbour, Mike's father is a doctor. They are good f. They w hard. They have a happy family.