完形填空

These days, men and women, the young and the old are 1 the same kind of 2 , and some of 3 have long hair. We often can't 4 whether（是否） they are boys or girls, men or women.

    5 old man often goes to walk in the 6 . He is sitting on a chair now. A young person is standing 7 him.

"Oh, my goodness!" the old man says to the other one on the chair. "Do you 8 that person with long hair? Is it a boy or a girl?" "Aboy," says the other one. "He is my son." "Oh," says the old man, "please 9 me. I don't know you are his 10 ." "I'm not his mother. I'm his father," says the other one.