25.
1 Mary learns French at the University. She has been learning English since last autumn.
2 They are busy now. They are discussing an important question.
3 Where is John? He is in the library. How long have you been working? He has been working since there for 10 years.
4 My son is in hospital. He has been there for ten days.
5 Mr. Ivanov teaches French. He is a very experienced teacher. He has been teaching for fifteen years.
6 I have known Jack well. Since when have you know him? I have known him since 1980.
26
1 Who are you waiting for? I am waiting for a friend. How long have you been watching for him? I have been waiting for him for about an hour.
2 What are you translating? I am translating the political article. How long have you been translating ? I have been translating it for an hour.
3 I translate seven or ten articles a week.
4 Where is my daily? It is lying on your table.
5 Your book has been lying for a few days. Take it.
6 We have known each other very well.
7 We have known each other since I arrived in St. Petersburg.
8 Mr. Brown is a director of our factory. He has worked as a director of the factory since 1990.
9 My brother lives in Omsk. How long have you lived there ? He has lived there since 1985.
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