Remember to attach instructions in order to answer. Meanwhile I can help you with the meaning of the sentences:
1. A) I really love being a grandfather.
B) I do not talk much with my grandson.
C) I do not have grandchildren.
2. A) My cousin is unfriendly.
B) My cousin is not very hardworking.
C) My cousin and I are very good friends.
3. A) Having kids is a big sacrifice, but it is ver beautiful too.
B) I do not understand my kids.
C) My husband and I do not have kids.
4. A) I do not talk much with my siblings.
B) I share stuff with my siblings.
C) My siblings and I are just like friends.
5. A) I like being an only child.
B) I have brothers and sisters.
C) I live with my grandparents.
6. A) My nephew is 10 years old.
B) I really love being an uncle.
C) My wife and I do not have kids.
Hope it helps.