第28题: [单项选择]What docs the man imply about Mary A. She won’t be able to come. B. She’s not going to graduate. C. She has a week to do the work. D. She’ll visit her sister in a week. 参考答案:A 答案解析:[听力原文] W: Mary insists she’s coming to my graduation. M: But she has to work that week, doesn’