根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
When I was 16 years old, a boy gave me an important gift. 51
It was the early autumn of my first year at a junior high school, and my old school was far away. 52 I was very lonely, and afraid to make friends with anyone.
Every time I heard the other students talking and laughing, I felt my heart broken. I couldn’t talk with anyone about my problems. And I didn’t want my parents to worry about me.
Then one day, my classmates talked happily with their friends, but I sat at my desk unhappily as usual. 53 I didn’t know who he was. He passed me and then turned back. He looked at me, with a smile on his face.
