单项选择题A. Once or twice a monthB.Twice or three times a month.C. Three or four times a month.
单项选择题C
单项选择题A.She doesn’t know Professor Zhang at all. B.She’s lost her voice and can’t talk.C.She’s very busy at the moment
单项选择题B
单项选择题A. Interviewer and interviewee.B.Shop assistant and customer.C. Product manager and colleague