根据短文内容完成句子。 Bill was fourteen years old. He thought he was a young man,but his parents thought he was still a boy. They said, 'When you begin to think about helping others,you will be a young man. ' One morning, his parents gave Bill some money to buy milk at the store. He saw an old man there. The man looked very sick. Bill went to him and asked, ' Are you all right?' The old man answered,'Yes,but I need something to eat. ' 'Then let's go to the restaurant,' said Bill. When the waiter asked what they wanted,the old man said,'Just a glass of water. ' 'Do you want anything to eat?' asked the waiter. The old man didn't answer, and Bill asked him, 'Have you had your breakfast?' 'No, I haven't had any food and I don't have any money because I lost it,' answered the old man. The boy said to the waiter, ' My friend wants to have bread and coffee.' 'I'm giving you too much trouble,' said the old man. The old man ate quickly what the waiter had brought him. 'I'm fine now,' he said. 'I'll never forget your kindness ! You are a very good young man. ' Bill was pleased because the old man thought he was a young man. The waiter came, and to their surprise, he said that the food was a present and it was cheap because it was the birthday of his boss,and they were the first customers of the day. 1. Bill was fourteen years old, but he thought that he _____. 2. If a boy _____, he will be a young man 3. The old man did not look well because he _____. 4. Bill asked the old man to come to the restaurant in order to show that _____. 5. Bill paid a little for their meal because it was _____and they were _____.