Answer:
By 2050, human beings will have been building (build) and living in cities for around 10,000 years. It is estimated that, by this date, more than 70 percent of the world's population will be living (live) in urban environments. In preparation for this, developers in the US alone have constructed (construct) nearly ninety million new homes by 2050. The cities of the future are likely to be much cleaner places than those we inhabit today. By then architects will have designed (design) buildings that use smart materials to help reduce air pollution and we will use (use) less fossil fuel and more alternative energy for decades, making cities considerably less polluted than they are today. Solar panels will become (become) the norm on most buildings by 2050, and we will recycle (recycle) a much larger proportion of our waste than we do today. Where will you be living in 2050? Wherever it is, it is very likely to be in a city
