⑴Are you Mike? A. Hello, Su Hai.
⑵Hello. I'm Su Hai. B. Hello, Yang Ling.
⑶Hi, Sam. C. No, I'm not.
⑷Goodbye. D. Hello, Tim.
⑸This is my brother, Tim. E. Hi, Bobby.
⑹She is my sister, Yang Ling. F. See you.
A: Hello, Tom.
B: Hello, Tim.
A: This is Helen. She is my sister. This is Tom. He is my friend.
B: Hello, Helen.
C: Hello, Tom.