Ответ:

  1. When you meet someone for the first time it is polite to shake hands.
  2. A rhinoceros is a large wild animal. It has one or two horns on its nose.
  3. — Are you looking for your gloves?
    — Yes, I am. I can’t find them.
    — Are these yours?
    — Oh yes, they are mine.
  4. I’m reading a story about two monkeys. — Oh, read it to us.
  5. It is your car? — Yes, it’s ours.
  6. — This is my dictionary. Give it to me.
    — No, it’s not yours, it’s hers.
  7. A kangaroo is a large Australian animal. It jumps on its strong back legs. Female kangaroos carry their babies in a pocket on their stomachs.
  8. It was Paul’s idea, not mine.
  9. They look exhausted. What’s wrong with them?
  10. Are you their friend?
  11. This is our car, not theirs.

В предложении 5 нормативнее: Is it your car? — Yes, it’s ours.