--How are you?A. How are you?B. How do you do?C. Fine，thanksD. He is fine．

网友回答

A. How are you?
B. How do you do?
(答案→)C. Fine，thanks．
D. He is fine．
解析：情景交际。How are you? 你好吗；How do you do?一向可好；Fine，thanks．很好，谢谢你；He is fine．他很好。根据上文，你好吗？可知选C。