根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。
My mother only had one eye. And because of this, I n ever wished her to show up in my school, being afraid that my classmates would 1 I had an ugly mother.
One day during elementary school, I was terribly ill. My mother came.
“Your mom only has one eye?!” asked some of my classmates. I was so 2.
I wished my mother would just 3 from this world. “If you make me teased(嘲笑), why don't you just die?” I shouted at her, taking no notice of the sad look on her face. My mother just handed me some medicine and left without saying 4.
At that time, I felt 5 to say what I always wanted to say, and I didn't think I had hurt her feelings very much. That nigh t I saw my mom 6 in her room, so quietly, as if she was afraid that she might 7 me. Even so, I hated her tears from one eye. I made a 8: I must study hard and leave my mother.
Years later my dream came true. I was quite successful and lived 9. I never thought of going back to see my “ugly” mother 10 one day I got a letter, which said, “My son… I'm sorry I only have one eye. When you were little, you got into a(n) 11 and lost your eye. As a mom, I couldn't 12 watching you live with only one eye. 13 I gave you mine. I was never 14 with you and I never regretted(后悔) what I did be cause I 15 you……”
I cried out aloud. Only then did I realize how beautiful my mother was!
