—?—Very well thanks.A. How are youB. How do you doC. Where are youD. What are you doing

问题补充：

—?

—Very well, thanks.

A. How are you

B. How do you do

C. Where are you

D. What are you doing

答案：

(答案→)A. How are you

B. How do you do

C. Where are you

D. What are you doing

解析：情景交际。根据答语，非常好，谢谢你。可知上文问的是，你好吗？故选A。