单项选择题
Conversation 2 Questions 8 to 10 are based on the following conversation.
A.Piano. B.Pipa. C.Erhu. D.Both B and C.
A.Call a friend. B.Work on his car. C.Take a taxi. D.Walk to work.
A.Teacher and student. B.Classmates. C.Mother and son. D.Boss and clerk.