Suppose you are Li Hua. You and your friends have formed an interest group about China's calligraphy, and now you are recruiting other members. Please use it according to the main points.
Write an email to Tom, who is an exchange student in your school. Writing score: 1. Briefly introduce interest groups; 2. Invite Tom to attend; 3. Your expectations. What is the content of "your expectation"? ) thank you