Ответ:

  1. A friend of mine speaks three foreign languages.
  2. The sportsmen are not familiar with the software.
  3. The receptionist left the sportsman’s passport on the desk.
  4. His suitcase was heavy, much heavier than hers.
  5. Yesterday I fell and hurt myself.
  6. His parents’ car is black.
  7. This test is probably easier than the previous test.
  8. I completely disagree with him.
  9. In the first half of the twentieth century, Europe was the centre of two world wars.
  10. Portugal is a small country. Its only neighbour is Spain.
  11. They know everything themselves, I’m sure.
  12. Are these keys yours?
  13. Mr Brown was their teacher in the sixth form.