Правильно ли я построила предложения? если не. напишите правильно. и где мои ошибки! ? 1) by the time i am 25, people will havr good education 2) by the time i am 25 a earth will has polluted 3) until we pollute a planet, our people will have problems. until people in our towns (состаавить с ним два предложения) we ( а с ним одно предложение)

1) at that time, when i'm 25, people will have a good education2) by the time when i will be 25, the earth will be contaminated3) while we do not pollute the planet, our people will not have problems.первое- while the people in our cities will not litter, they will not do harm the planet.второе- while the people in our cities, they have to worry about the cleanliness of the city and the planet.until very dirty should not walk, so we will take care of the planet and the city to monitor the purity    

 

 

я думаю,что,нужно так) 

Nowadays, teenagers need the money more than ever before because their needs are growing rapidly due to the emergence of modern society with its new technologies. A lot of people think that there are more advantages than disadvantages while others claim it is challenging for young people. In my opinion, having a part-time job is one of the best ways to spend time valuable. Part-time jobs offer teenagers opportunities to earn money, get new experience and some essential skills that will benefit them while choosing a future career. What is more, if a person is responsible enough, he will have work and be in school at the same time. For this to happen, teenagers should correctly manage their time and have a daily schedule. On the other hand, some people think it is no good for teenagers.