Professor Yi Zhongtian ______ to the Talk Show on CCTV—1 last weekend .A. invites B. invited C. was invited
—___________? —He is Andy’s father.
Peter and I _________ classmates.
Hello, Lucy, _________ Millie.
—_______ is the young man? —He is Kate’s brother.
— Hi, Li and Lucy, are you classmates? — Yes, _____.