A clever boy
There is a big tree near the playground. It is fifty years old. There is a big hole(洞)in it.
Now some boys are playing football on the playground. Jim kicks the ball into the hole. The hole is very deep. They can't reach(达到)the ball. How can they get the ball out of the hole?Now Bob has a good idea. He asks the boys to bring some water, and fill the hole with water. Soon they get the ball out of the hole. They say Bob is a clever boy.