听下面一段材料,回答第1-2题。 1. According to the dialogue, why has the woman called the man? [ ] A. To discuss the guitar lessons of her friend's son. B. To ask about guitar lessons. C. To ask about piano lessons. 2. Which lessons does the woman come to? [ ] A. A group class on Wednesday B. A private (私人的) lesson on Tuesday C. A private lesson on Thursday