3.可适当增加细节,以使行文连贯。
Dear principal, my name is Lihong, and i am a student of this school. i heard the exchange student from Canada get to our school. They wants find the host family for two weeks. im trying to get this chance and let one Canadian student live in my house. I am good at english and i think i can conversation with the Canadian student really well. And i'm really want to learn something from another country's student, i want to know the different between the Chinese students and the Canadian students.