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11. Many experiments (carry) out in our laboratory last year. 12. Children and (a/an, the, -) old (take) care of in this country. 13. The students (examine) in an hour, but they all (gather) already in the classroom. 14. She told me she (be) going to take part in the conference. 15. The police officer asked me if I (see) the accident. 16. The secretary said that the manager (come) to the office in half an hour. can (not) could (not) must (not) may (not) be able to 17. Our house is situated in a beautiful place. We ... see the lake from our bedroom window. 18. She spoke in a low voice but we ... understand everything. 19. You ... do something to help me. -Sorry, but I ... . 20. I'm afraid I ... go to the party next Sunday. 21. You ... keep it secret. You ... tell anybody about it. 22. ... I ask you a question. Certainly, you ... . 23. What is ... longest river in ... world? (a, the) 24. ... hotel we stayed at was ... very nice building, (a, the, -) 25. ... Sun is ... star. ... Venus is the brightest planet in ... sky. (a, the, -) 26.1 often watch ... television but I seldom listen to ... radio, (a, the, -) 27. Our train leaves from ... Platform 6. Will you come to ... station ? (a, the, -) 28. ... Lake Baikal is one of ... deepest fresh-water lakes in the world, (a/an, the, -) 29. This programme was watched (of, by) millions of people. 137
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