单项选择题
May I speak to Dr. Brown?（）
A.Yes, he is not in at the moment. B.No, you can't. C.Yes, this is Brown speaking.D.Sorry, speaking.
单项选择题 May I see your tickets, please？（）
单项选择题 May I see your tickets, please?（）
单项选择题 May I move your bag a little and take this seat?（）
