Сделайте предложение отрицательным. 1. We had to change trains 2. He has to get up early this morning 3. He has to work 4. They will have to leave soon 5. She had to stay there for a long time

we didn't have to change trains

he doesn't have to get up early this morning

he doesn't have to work

they will not have to leave soonow

she didn't have to stay there for a long time

Объяснение:

Today we know a lot of different ecological problems. Every of them has a bad effect on our environment and now we extremely need to find a way to solve them. It goes without saying that all these phenomena caused by human activities. Factories should stop to dumb chemicals into lakes and rivers. People must change thier habits and start to sort rubbish. Also governments all over the planet need to make special laws and punish people who break them. I think, if we do that all our problems will be solved.

Teenagers usually hang out, run away from lessons, play phones, computers.

Boys or girls from 12 to 18 years of age are considered adolescents.

Usually at this time, many children change often to mess around on the streets and some are engaged with illegal things, for example: drinking alcohol, smoking vapes or cigarettes, etc.

Объяснение:

Подростки обычно тусуют сбегают с уроков, играют телефоны,компьютеры.

Подростками считаются мальчики или девочки с 12 лет до 18 лет

Обычно в это время многие дети меняються часто возяться на улицах а некоторые занимаються с не законными вещами например:пьют алькогол, курять вейп или сигареты итд.