Dear sister:
Hello!
Since the two of us left today, I began to miss you again. It's really hard for me to wait another week to see you, so I write to you to make my heart feel better.
Sister, it's hard for you to go home every time. I must have studied too hard at school. That's because you will be admitted to college in a few weeks. I believe that you will be admitted to a good university and achieve something in the future. Come on! Come on!
Sister, every time you come home, I am very happy, and when I often tell you the truth, you don't seem to be listening, but I'm not yelling. Sister, I really miss you. Every time my mother scolds me, you will stand up and support me. You are really good to me.
Sister, every time you hug a lot, I am very happy when I look at you happy, and my heart is very practical. Can you believe it? You don't believe me, just wait and see!
Okay, okay, I won't say much. I am sleepy and want to sleep. Can I write to you next time? Hee hee! Remember to reply. I love you!
Congratulations.