Монолог"Какие экологические проблемы есть в нашем город и как содержать город в чистоте" (5 предложений) это задание

The biggest environment problems in my city is pollution of forests and lakes. Not all people collect garbage after barbecue and let litter in the woods. Also, some people wash cars near the lake and the dirty drains in water. To solve these problems, we have to organize voluntary work to collect the garbage, to plant trees, to clean lakes. We have to be more responsible because water and forests maintain our life. Besides, cars emit toxic gases which pollute nature. So, we must not use cars, but have a healthy lifestyle, to cycle and walk.