One day Tony was crossing the road when he was hit a car. He fell and broke his arm. He was sent to a hospital. There a doctor operated on his arm. Then he put the arm in a cast(石膏). Tony could not move it at all.“You must keep your arm in a cast for a month.” The doctor said, “That will give the bone(骨头) a chance to get well”.A moment later, Tony went back to the hospital. The doctor used a large knife to cut the cast. Then he took Tony’s arm out of the cast.“Can you move your arm, Tony?” he asked.Tony tried to move his arm. At last it was difficult, but soon he could move it easily.“Yes, it’s fine”. He said, “Thank you very much”“In a few days it will be as good as before.” the doctor said, “Just exercise it a little every day.”“Will I be able to play the guitar?” Tony asked.The doctor smiled, “Of course, you will.” He said, “you will have no problems.”“That’s good news.” Tony said, “Because I couldn’t play it at all before.