1/

     I was born in a small country. It's very peaceful and pure, but it's just the past. Currently, due to the needs of people to travel, the air is increasingly polluted and roads are often congested. The cause of pollution is that roads are still narrow compared to cities, many people travel during rush hours. And also because the awareness of the people is not good, they still jostle and no one will give way. I have also introduced measures to overcome this situation such as: widening roads, places with long distances, so traveling by bus will be safer and propagating to people about traffic congestion. 

2/

      Currently, due to high living needs, it is necessary to use many types of energy. This job is beneficial but also harmful. It will have a negative impact on the environment and some of the energy could be depleted. Therefore, it is recommended to use renewable energy such as wind, sun, water, ... because it is both cheap, safe, clean and plentiful. Solar energy is used in many fields such as space heating, solar water heaters, drinking water distillation and disinfection, solar cooking. . . Create water heaters that use heat from the sun for domestic use. Humans have used wind energy to move sailing or hot air balloons. In addition, wind energy is also used to create mechanical work thanks to the windmills. The idea of ​​using wind energy to generate electricity came soon after the invention of electricity and generators.

3/

        That's an airplane. It looks like a normal airplane but it's very modern. It is powered by solar energy. Its speed is very high. It can carry 60 people. Its wings are designed like a panel. It converts sunlight into energy. I think if s a very modem and eco-friendly device. It will be an airplane of the future.