完形填空。
John was a very naughty boy. His mother always hoped that he would behave better. Then one day, John's teacher called his mother 1 the phone and said, "Did you know, Mrs King, that John saved a boy's life when he fell into the river this morning?" Mrs King 2 very happy. "John is becoming a good boy," she thought. Then she turned to him and said, "Why didn't you tell me you were such a 3 boy this morning and saved 4 of your friends when he fell into the river?" But John didn't look happy. His face became very red. "Well, I really had to 5 him out because I pushed him in," he said.