17.Michael: Hi, mom. I’d like you to meet my girlfriend, Susan Lee. 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. _____

(3分)
A. Please feel natural.
B. Make yourself at home.
C. Feel all right here.
D. Take is easy.
出自:西北大学大学英语(上)