Dear Mum and Dad, hope you are well. I miss you very much. I just read an article about taking care of ourselves and I couldn't help writing to you about this. That article mentions the importance of having healthy food, doing more exercises, and having sufficient rest to keep ourselves healthy. I hope that you will look after yourselves better instead of trying to make more money with less sleep. I am good at school. Teachers and classmates all like me. So don't worry about me at all. I can even cook some dishes at home and I intend to cook for you when you are back. Letter is short, but days are long. I will be a good boy, waiting for your return. Love, John