---How do you do?  ---

 —How do you do?

—_________

A. Hello!                              B. Nice to meet you.                 C. How do you do?

---How do you do?  ---

—— How do you do ？

—— ___________________

A. How are you ?   B. How do you do  ?

C. Yes , I am fine       D. Thank you

-How do you do?   -______

　　     A. How are you?   B. How do you do?   C. I’m fine.