单项选择题
M: Can you recommend something that n school boy of seven or eight will really like
W: I’d suggest this toy train，sir．It’s an excellent brand．Very popular all over the world these days．
Q: What is the mall doing（）
A. Shopping with his son.
B. Buying a gift for a child.
C. Promoting a new product.
D. Bargaining with a salesgirl.