— ?—How do you do?A. How are you B. What do you do C. How do you do

问题补充：

— ?

—How do you do?

A. How are you B. What do you do C. How do you do

答案：

解析：句意：你好！你好！西方人见面打招呼时常用How do you do?（你好！）回答时也用How do you do?（你好！）；A你好吗？B你是做什么的；故选A。