根据短文内容回答下列问题 Dear Cindy, Thank you very much for your letter. You want to know about my favorite sport and instrument. Now I tell you. I like swimming very much, and I like volleyball, basketball. Swimming is my favorite sport. I am good at chess, too. My favorite instrument is violin. I like playing the violin every weekend. What about you? What's your favorite sport? Do you like to play the violin7 Please tell me. I want to hear from you again. Yours, Mary 1. Who is the letter to? _______________________________________ 2. Who is the. letter from? _____________________________________ 3. What can Mary do? _______________________________________ 4. What does Cindy want to know? _______________________________________ 5. What sport and instrument does Mary like best? _________________________________