There are so many ways to keep the environment green. We can recycle a lot of things such as: plastic bottles, plastic bags, ... But in my opinion, nowadays recycling plastic bottles is very popular. Because we can make many things from plastic bottles such as: used to hold pens and pencils, used to arrange flowers… But I think using it to arrange flowers is the best. Because it's very easy to do. First, you have to cut it to get the desired height. Second, you should decorate it more beautiful, you can draw on it. And finally, you should put the flowers in it. In short, we have many ways to keep the environment green, please always protect the environment.