根据短文内容及首字母提示，填写所缺单词，使短文意思完整。每空限一词。

I worked in a shop three years ago. A girl started working there a few months after me. I met her often but we never t_1._. We just saw each o__2.__ and smiled.

She would always smile in a really happy way until one day when we got to work in the same department again. She smiled as if she was the h___3.___ girl in the world. I went up to her and asked, “What’s w___4.___ with you?” She answered, “Why?” I said, “I can feel you’re very sad but you’re always t___5.___ to hide it.” Her mouth just dropped as if I had discovered her deepest s___6.____, so we started talking. She told me why she was feeling like that and why she was trying to hide it. Time w__7.___ by and we became good friends. Later she said that I had changed her life in many w__8.__. Today this girl is one of my best friends. She has been there for me in every possible way a friend could be.

I guess what I’m trying to say is that you never know when you’re helping y___9.___. I helped this girl never knowing that at the same time I was helping myself by finding a t___10.___ friend.