参考答案：A

解析：

[听力原文]6-7 W: Hello. M: Good evening. (6) Is this Mrs. White, Room 1605  W: Yes. (6) Who’s speaking, please M: This is Reception, Mrs. White. (7) You called us to report that there was something wrong with the toilet.  W: Yes. (7) I have never seen a room with such poor facilities.  M: I’m terribly sorry about that. I’m just calling to check whether the problem has been solved, Mrs.White. W: No, no one has come since I called you. M: I do apologize for that. I’ll check with the Maintenance Department. I assure you that they will come soon. W: Would you Oh, here they come. Thank you. M: My pleasure. Thank you, Mrs. White. 根据原文两个(6)处使用的“Is this Mrs. White，Room 1605”以及“Who’s speaking, please”可知这些句子都是打电话用语，故选A。