Раскройте скобки, употребляя глаголы в Present Perfect или Past Simple. 16. I (not to see) my cousin since last year.

16. I haven’t seen my cousin since last year. 17. Why did you put these things in the wrong place? 18. Why have you left the door open? You will catch cold sitting in the draught. 19. \"We haven’t met for such a long time!\" said my friend. \"Yes, indeed,\" I answered, \"and we both have grown.\" 20. What books did you read when you lived in the country? 21. They have not yet come from the south. 22. He was ill last week, but now he has recovered. 23. If everybody has read this new novel, let\'s discuss it. 24. Have you booked tickets? — Yes, I have. I booked them several days ago. 25. I can hardly recognize you. I have not seen you since you left for Moscow. And you have changed so much.