相关HelloMary的文学知识

问题详情：阅读材料,根据材料内容完成下面的任务。LiHui:  Hello!Mary: Hello!MayIspeaktoLiTing,please?LiHui:I’msorrysheisn’tin.Mary: Couldyouaskhertocallmebackthisevening？LiHui:Sure.Who’sthis,please?M...