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Ответ: 1. The new library was builted two years ago; 2.All the mistakes are corrected by the teacher; 3. At the meeting at an English university the writer from St.Petersburg was asked questions about life in Russia; 4. The table was bought by me half an hour ago; 5. The portrait of M.Gorky was hung on the wall in the reading room yesterday; 6. The umbrella was left by somebody on a tram.