hee 23. They've lunch. They A) have / had B) had / have it at 12 o'clock. C) had / having D) had / had 24. I've my homework. I A) done / done C) done / did it after supper. B) did / done D) did / did ? 25. A: Have you tidied your room B: Yes, I've tidied it. A) yet / just C) already / just B) just / yet D) already / just 26. I've never A) saw / eats anyone who B) seen / eat more than you. C) saw / eaten D) seen / eats 27. Bob's not here. He's A) been B) went to work. C) gone D) being 28. My brother's A) been B) gone to America 4 times. C) went D) being 29. It's good to see you again. Where have you A) gone B) being C) been ? D) went 30. Mary's hair looks nice. She's just to the hairdresser's. A) gone B) been C) was D) went smoking. 31. It's terribly difficult to give A) on B) off C) of D) up​

The first analogues of chewing gum were pieces of resin that were found during excavations in ancient settlements. The Kurtis brothers of Maine started producing gum first . It was in the middle of the 19th century .They created chewing gum from pine resin mixed with bee wax. Although with the advent of rubber gum their popularity fell sharply A patent for the production of rubber gum was obtained in 1869 by William Finley Semple of Ohio Although he himself did nothing further, the rubber gum saw the light in the same year . The production of chewing gum was carried out by the entrepreneurial resident of the state of New York Thomas Adams By cheap buying a ton of rubber and not finding it better use, he at his own risk boiled a small piece of rubber at home and formed gum His next step was to change the taste qualities of this product through the addition of lacquer flavor. Since then, gum has firmly and seems to have forever become an unaltered attribute of our lives. . Good or bad, the question is controversial

1. Where do you live? 2. Where is your friend? Z. What they teach in school? 4. You learn English? 5. Do you watch TV every day? 6. Why he rarely watches TV? 7. When you usually at home? 8. Who usually stays home with the kids? 9. I'm rarely at home on Saturday and Sunday. 10. Who usually calls you every week? 11. You are often talking to a friend on the phone? 12. My girlfriend often calls me and I talk to her about my problems. 13. Your mother usually cooks meat or fish for dinner? 14. You often cook vegetables? 15. My brother often listens to the radio and watching TV. He usually listens to music in the car, memorizing the beautiful songs and then sings them. 16. When my brother asks me questions, I always answer them. 17. Why this teacher rarely answers our questions? 18. When my friend asks me about work, I answer his questions, and he didn't. 19. You play on^Lianna? 20. My sister is Ua not playing the violin, she plays the cello/ 21. You play tennis? 22. Her brother plays football and hockey? 23. Every day they play computer games. 24. He usually goes to work by car or metro? 25. She travels to London by train or fly by plane? 26. They are going to go to the theater by taxi. 27. Who is going to go to the Park on foot? 28. Whose friend lives here?