单项选择题
M: Has Professor Arnold from Sydney University arrived W : I’ ll have to check. Then I’ ll get back to you straight away.
What is the woman’ s reply（）
A. She knows Professor Arnold has come. B. She thinks Professor Arnold has checked in. C. She is sure that Professor Arnold has arrived. D. She doesn’ t know whether Professor Arnold has arrived.
单项选择题 What did the woman do last weekend（）
单项选择题 What does the woman mean（）
单项选择题 How many times has Christina tried to give up smoking（）
