I think there will be less polution.and there will be more trees. 正好我也要学习了 就写了一句 不够的话 我再帮你写点 再问： 再来几句, 再答： I think there will be more robots in people's house.and there will be more people. I think people will use the subways less.and there wil be more free time I think citis will be big and crowded.and there will be less food
