Вставьте в предложения подходящие по смыслу слова из предложенных групп однокоренных слов: differ, different, difference; to vary, various, variety; efficient, efficiently, efficiency. 1. the enterprise is working . 2. there is a of reasons for high unemployment in this region. 3. prices of the same agricultural products from region to region. 4. there is not any between these two methods, only the names . 5. these two economists are interested in fields of economics. 6. they have raised of their work by means of new machinery.
3. differ4. difference, are different5. efficient6. efficiency