单选题
Mike: Hi, mom. I"d like you to meet my girlfriend, Susan Brown. Susan, this is my mother.
Susan: How do you do, Mrs. Miller.
Mother: How do you do, Susan. I"m glad you can join us. ______.
【正确答案】
C
【答案解析】[解析] 主人让客人“随意一些；不必拘礼”在英语中的说法是Make yourself at home。A的意思是“别着急，慢慢来”；B、D的表达不合习惯。