完形填空（本题有15小题，每小题1分，共15分） You may know the song Happy Birthday very well . But do you know about its writer? It ＿＿＿＿ by an American girl . And now she has become one of the richest ＿＿＿＿. When she was a child, she was poor. Once some of her friends invited her to＿＿＿＿their birthday party . she was very pleased＿＿＿＿ sad because she had not enough money＿＿＿＿. presents for them . “ The party＿＿＿＿soon .Now I have＿＿＿＿money. ” Tears ran down her＿＿＿. Late that night she was in bed, thinking about the presents when the door opened and in came her grandma. “what happened? ” her grandma asked. Hearing the girl’s story, she said, “Don’t worry！＿＿＿＿me help you. ＿＿＿＿ singing a song together? Happy birthday to …”＿＿＿＿beautiful song! They sang and sang. Suddenly she woke up. It was a dream ! She decided to ＿＿＿＿at once and sing it to her friends at the party. When she sang the song at the party the next day , her little friends were very happy. “How ＿＿＿＿you are singing ! We haven’t heard＿＿＿＿ song before. Thank you for＿＿＿＿us the special present.” Said one of them. And they learnt to sing it together. Later the girl became well-known in America.