The changes I made to the surroundings

I tried to recycle all the beverage cans I drank with and sold them to the Cub Food market. Geneally, I drank apprximate 5 boxes of beverage which are about 60 cans in one semester. I didn't throw them away directly as usual. Oppositely, I gather them together and sold them at the end of the semester. It was not only an environment-friendly action, but also brought me some extra money.