Complete the text with the Future Continuous Future Perfect Simple or Future Perfect Continuous forms of the verbs in brackets.

By 2050 human beings will have been building 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 (1) ____________ (live) in urban environments. In preparation for this, developers in the US alone (2) ____________ (construct) nearly ninety milion new homes by 2050. The cites of the future are likely to be much cleaner places than those we inhabit today. By then architects (3) ____________ (design) buildings that use smart materials to help reduce air pollution and we (4) ____________ (use) less fossil fuel and more alternative energy for decades, making cities considerably less polluted than they are today. Solar panels (5) ____________ (become) the norm on most buildings by 2050, and we (6) ____________ (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.