A: Excuse me, Miss Black. 1______.
B: Not very big, but I think it's not fairly small. I have two brothers. The elder one is married.
A: Do your brother and his wife have any children?
B: Yes. 2 ______.
A: Boy or girls?
B: A boy and a girl, so I have a niece and a nephew.
A: Can a sister and a brother be twins?
B: It's uncommon but possible. In China, there are still quite a lot of large families, aren't there?
A: 3 ______. Thanks to the "one-child" policy (政策), very few families now have more than
    one child. 4 ______.
B: 5 ______. Is your family large?
A: No, I have only one sister, but my grandparents are living with us.
B: In America, children often move away from home when they are just 18 or 19. It's sad. Many
    children live far away from their parents.
A: In China, too. More and more young people live far away from their parents when they are
    married.
A. How about your family?
B. My sister-in-law gave birth to twins last March.
C. Are your married?
D. So more and more families are becoming richer and richer.
E. Do you have a big family?
F. I agree with you.
G. I don't think so.