Поставьте сказуемое главного предложения в past indefinite и произведите соответствующие изменения в придаточных предложениях. 1. he says he will drive a car himself. 2. she thinks that they will speak about great achievements in nuclear physics. 3. he asks whether you can read english. 4. they ask if he is expecting any visitors. 5. we consider that great changes have been made in modern industry. 6. the teacher considers that the level of his students' knowledge is high enough. 7. we know that safety is one of the main concerns of transportation. 8. we believe that they will be given every opportunity to go on with their experiments. 9. the mother asks the teacher if her child studied properly. 10. nobody knows how this accident occurred. 11. we believe that she will win the first prize at the figure-skating competition. 12. he says his brother is taking his exam now. 13. he asks if the plan is changed. 14. the teacher cannot understand how the boys have solved that complicated problem in such a short time.

1. he said he would drive a car himself. 2. she thought that they would speak about great achievements in nuclear physics. 3. he asked whether you could read english. 4. they asked if he was expecting any visitors. 5. we considered that great changes had been made in modern industry. 6. the teacher considered that the level of his students' knowledge was high enough. 7. we knew that safety was (is) one of the main concerns of transportation. 8. we believed that they would be given every opportunity to go on with their experiments. 9. the mother asked the teacher if her child had  studied (studied)  properly. 10. nobody knew how that accident had  occurred. 11. we believed that she would win the first prize at the figure-skating competition. 12. he said his brother was taking his exam then. 13. he asked if the plan was changed. 14. the teacher couldn't understand how the boys had solved that complicated problem in such a short time.

Forests play a major role in developing the economy, improving the environment. the trees themselves - a fuel suppliers, and most importantly - wood for construction projects and technical craft materials. so what do you think in deforestation over plus or minus? timber companies that supply the world of wood and paper products, also cut down countless trees for the construction of roads and as a result of urban growth. however, not all lesoistreblenie is intentional - some is due to a combination of human and natural factors, such as forest fires and overgrazing, which does not allow growth of young trees.on the other hand forest - a habitat for the majority ofanimal species, it is the breadwinner of animals and humans, giving themnuts, berries, mushrooms, edible shoots of grass and lichens. forest ecosystems are very important for the life of the biosphere: theyenriching the atmosphere with oxygen .lesa play an important role in the water cycle. forest soils filter the water flowing from the fields and industrial sites, andpurified them from many contaminants. forest ecosystems evaporated inair moisture and beneficial effect on the climate by increasing humidityair. considering all the circumstances, i conclude that it is necessary to reduce deforestation and to look for alternative ideas. we chat because it is dependent on the nature and nee.i i would like that other generations have seen the beauty of nature, and not something that leaves a land raped.

Хотя качество обслуживания высокий есть еще значительная скученность на некоторых линиях в пиковые периоды. эта проблема обсуждается и дополнительное улучшение сервиса планируется на будущее.ряд схем модернизации станций в настоящее время завершена. целью является обеспечение более привлекательные условия для пассажиров. использование современных материалов делает обслуживание проще. эта модернизация согласовывается с обновлением лифтов и эскалаторов и внедрение новых билетов машин. стоимость проезда в метро зависит от расстояния, но низкая составляет 50 пенсовподземный становится намного чище и ярче, и поэтому 'более приятным для использования, нося больше пассажиров, чем в любое время в его долгоуровень преступности в лондоне, как правило, отражается уровень преступности на лондонском транспорте. по 1he статистике уровень преступности в метро отец высоко. для обеспечения безопасности пассажиров и сотрудников транспортных власти добавили больше полицейских на метро системы, чтобы гарантировать уровень защиты, как это возможно.