A group of citizens would like to organize a clean-up in a nearby park when they noticed that there was a lot of garbage on the grounds. Then, they planned to use social media to promote a campaign and met early on a Saturday morning. To their big surprise, many people of the community eagerly joined in the activity and brought along gloves and bin bags. When they got together, they worked hard to ＿＿（41）＿＿ the park of all the trash. Because there was too much trash, they classified the waste into recyclables and non-recyclables and ensured that each type of waste ＿＿（42）＿＿ properly. By noon, they had filled several bags with litter. After the cleaning activity, the park really looked different ＿＿（43）＿＿ to what it was before. The appearance had greatly improved and was much cleaner and more attractive than before. The mayor of the town ＿＿（44）＿＿ this event and also decided to show his support by providing more trash bins and recycling containers within the park. The mayor was also pleased to organize regular clean-up activities to keep the ＿＿（45）＿＿ of the park. The volunteers felt a sense of pride and accomplishment and knew that they had made a great contribution to their community.