John is a paper boy. He delivers（送）newspapers to different houses in his street every day. He has about 80 customers（客户）. Half of his customers only take the newspapers on weekdays, and about half take the newspapers on weekends. Two of John’s customers only take the newspapers on Sundays.
John has to get up at 4:30 every morning to deliver his newspapers on Sundays.
John is saving his money to buy a new bike. He is also saving money for college. He has $500 in the bank now.
阅读短文，用合适的单词完成句子
John delivers ______ every day.
John has about ________ customers.
_____ of his customers only take the newspapers on Sundays.
John is saving his money to buy _____.
“Paper boy” in this story means “______” in Chinese.