Jack and Bob lived in a small village far from the city. One Sunday morning， they walked in the forest and found a big， deep hole. Jack looked at it and said， "Wow! That looks deep." "It sure does，" said Bob. "Let's drop some stones into the hole. We can count until we hear the stones hit the bottom. They threw some stones and waited. There was no sound.
Jack said， "Wow! That is really deep. Let's throw some big rocks down there. Those should make a noise." So they picked up a few soccer-sized rocks and threw them into the hole. Again， they heard nothing. They looked at each other in surprise. Jack found a big log （木头）. He got an idea. "Help me carry that log，" he said. Finally， they carried the heavy log together and dropped it into the hole. Still， no sound.
Suddenly， out of the forest， a sheep showed up， running like the wind. It rushed towards the two boys， and then right past them. All of a sudden， it jumped into the air and down the hole. Jack and Bob looked at each other. "What just happened？" asked Bob.
Before Jack could answer， a farmer came out of the forest， too. "Hey， did you see my sheep just now？" Jack said， "Yes， we did. It's the craziest thing that I've ever seen. It came running crazily and jumped into that hole!" "Nah，" said the farmer. "That can't be my sheep. My sheep was chained （被链条拴住） to a big log." Hearing this， Jack and Bob felt guilty （内疚的）. And then …
