单项选择题
M: Honey, we’ll have a guest from Australia, a friend of mine. He’ll stay in California for two weeks.
W: Yes, your friend Andy. He was your classmate at London University, wasn’t he
M: Yes, he was. We haven’t met for years.
W: So you two could have a good time together.
A. Australian and American.
B. Guest and host.
C. Husband and wife.
D. Professor and student.