改错题。 It was sunny this afternoon. Mum and I go to the park where is near my home for a walk. When we were walking, I saw the little girl. She was eating a banana. After she finished eating them, she threw the banana skin on the ground into the park. I walked over to pick it and told her it was wrong to do so. If all of us do like that, the park has become dirty. Then we can’t enjoy by ourselves in it. All of us must improve us environment and then we can make our environment clean but beautiful. 1. _____ 2. _____ 3. _____ 4. _____ 5. _____ 6. _____ 7. _____ 8. _____ 9. _____ 10. _____