One day, a poor boy, named Howard Kelly, was trying to pay his way through school by selling goods door to door. He was hungry, 1 he decided to beg something to eat. When a young woman opened the door, instead of a 2 he asked for a drink of water. Thinking he looked 3 she brought him a large glass of milk. He drank it and then asked, “How much do I 4 you?” “No, you don’t owe me anything,”she replied.“Mother has taught me 5 to accept pay for a kindness.”Leaving that house, he not only felt stronger 6 , but it also increased his faith in God and the human race. He was about to 7 before this point. 8 later the young woman became seriously ill. The local doctors couldn’t cure her illness. They sent her to the big city, where specialists can be 9 to study her disease. Dr. Howard Kelly, now 10 came for the consultation (会诊) . When he heard the name of the town where she came from, a strange light filled his eyes. 11 he went into her room. 12 in his doctor’s gown (罩衣) he went in to see her. He 13 her at once. He went back to the 14 and determined to do his best to save her case. Finally, the battle was won. Dr. Kelly asked a nurse to 15 the bill to her room. She was afraid to open it 16 she knew that it would 17 the rest of her life to pay it off. Finally she looked and read these words on the side of the bill. “Paid in full with a glass of 18 .”(Signed) Dr. Howark Kelly. Tears of 19 flooded her eyes as she 20 silently: “Thank you, God. Your love has spread through human hearts and hands.”