分类：教育/科学-学习帮助
问题：看图小作文 
回答：One day, four children were playing ball in the park. There was a tree near them. Suddenly, a child threw the ball into the hole which is under the tree. They all had no idea. Then, one of them put his arm into the hole, but he can't reach anything. Everyone thought it is hard to get the ball from the hole, and would give up. But at that time, the girl had an idea. She poured the water into the hole, and then, the ball up.