Помогите я тороплюсь плис написать мини сочинение. На тему : Will the world be different in 500 years.

I think that world will change a lot in next 500 years. The humanity is developing really fast nowadays. Things that were almost miracles less than 20 years ago now are common for everyone. I think that in next 500 years we will have cars working without any fuel. Space travel will become common. Buildings will become like cities, with it's own shops, schools, universities. But unfortunately the Earth will become dirty. Lack of clean water and air will be the problems of people of future.