Как правильно расставить слова в правильном порядке чтобы получилось предложение are they london from

Если оно вопросительно, то: are thae from london?
А если повествовательное, то: they are from london.

They are from London/Они из Лондона. Или Are they from London?\Они из Лондона?

Ecology of Orenburg can not be called safe. Many environmental problems associated with the presence in the city of factories, sewage treatment plants and other things. Often air pollution brings storm wind from other regions of Russia. About 900 thousand tons of pollutants are released into the atmosphere annually. Significant impact on the quality of air has a motor vehicle, which has recently become more and more. It accounts for 63% of total emissions, and this figure is increasing every year.

Экологию Оренбурга нельзя назвать благополучной. Многие проблемы окружающей среды связаны с наличием на территории города заводов, очистных сооружений и прочего. Зачастую загрязнения воздуха приносит штормовой ветер с других регионов России. Ежегодно в атмосферу выбрасывается около 900 тысяч тонн загрязняющих веществ. Значительное влияние на качетсво воздуха оказывает автотранспорт, которого в последнее время становится всё больше. На его долю приходится 63% от общего количества выбросов, и этот показатель с каждым годом растёт.

Almaty is considered a modern city or as it is also called the southern capital of Kazakhstan. But many did not think about the ecology of our city. At the moment, this topic is very acute. And some try to fight. In the 21st century there is a rather large number of solutions in the form of new inventions. We have a lot of opportunities. For example, one of the reasons is the large number of cars in cities. According to statistics in Almaty, every third person has his own car. There are several solutions:

1. Transition from cars with an internal combustion engine to electric cars.

Benefits:

Electric cars do not emit exhaust fumes

Disadvantages:

The price of these cars is quite high.

It will be necessary to install special electric filling stations.

2. Installation on each car filter that will filter harmful gases into clean air.

Benefits:

Not a high price to install this filter.

No need to change the car.

3.Installation of tax on the purchase or sale of cars.

Benefits:

Decrease the number of cars in the city.

Disadvantages:

This method does not eradicate the problem but simply reduces the consequences.

According to the example, one can understand that we have a large number of possibilities, but we do not use them. And this can affect the future of our descendants.