完形填空。 When I was 13 years old, a boy gave me an important gift. It was a 1 . It was the early autumn of my 2 year at a junior high school, and my old school was far away. 3 , no one knew who I was. I was very 4 , and afraid to make friends with anyone. Every time I heard the other students talking and laughing, I felt my heart 5 . I couldn't talk to anyone about my problems. And I didn't want my parents to 6 me. Then one day, my classmates talked happily with their friends, but I sat at my desk unhappily 7 . At that moment, a boy 8 the classroom. I didn't know who he was. He passed me and then turned back. He looked at me and, 9 a word, smiled. Suddenly, I 10 the touch of something bright and friendly. 11 made me feel happy and warm. That smile 12 my life. I started to talk with the other students and made friends. Day by day, I became 13 to everyone in my class. The boy with the lucky smile has become my best friend now. One day I asked him why he smiled, but he couldn't 14 smiling at me! It doesn't 15 because all the dark days have gone. Now I believe that the world is what you think it is. If you think you are lonely, you might always be alone. So smile at the world and it will smile back. (     )1. A. book (     )2. A. first (     )3. A. For example (     )4. A. happy (     )5. A. beat (     )6. A. think about (     )7. A. as usual (     )8. A. entered (     )9. A. in (     )10. A. found (     )11. A. It (     )12. A. helped (     )13. A. closer (     )14. A. remember (     )15. A. remain B. help B. second B. In other words B. sleepy B. break B. worry about B. in fact B. left B. with B. saw B. Nothing B. changed B. quicker B. forget B. affect C. smile C. third C. In the end C. lonely C. strike C. talk about C. as well C. watched C. besides C. felt C. They C. lived C. easier C. mind C. appear D. surprise D. last D. As a result D. friendly D. shake D. care about D. once again D. locked D. without D. knew D. He D. spent D. nicer D. stop D. matter