Ⅰ.短文改错
Last Sunday we took a part in a cleanup activity in a forest outside the city. When we arrived, we were sad to see rubbishes everywhere. Though there was a “Do Not Litter” sign at the entrance, that didn't stop people litter around. Our team leader, Jim, divided us by two groups—one cleaned up the north side of the forest and the other cleaned up the south side. We cleared up a lot of waste, we were very happy to see the forest looked clean than before. It was absolutely worth our effort! There will be other cleanup activity in the green belt next Sunday. You can contact Jim and sign up for it if you're willingly to help. Whoever participated will receive a medal like last time. I'll join you too until I have time.