Ответ:

  1. Kathy is from America. She is twenty-one years old. She is a dancer.
  2. They are Mexican. Our country is beautiful.
  3. His name is Paul. My brother's name is Michael. They are vets.
  4. That boy is twelve years old. His name is Sam. This ball is mine.
  5. Ben and Kerry are students. Their favourite film is The Godfather.
  6. I am from Puebla. It is a great city.
  7. She is an artist. Her paintings are nice. This painting is mine.
  8. I am Billy and he is John. We are fire fighters. This car is ours.

Ответ: 1 She, She; 2 They; 3 His, They; 4 His, mine; 5 Their; 6 I, It; 7 Her, mine; 8 he, We, ours.