--–Can I speak to Mr Wang, please?        

 --________.

       A. Who are you ?   B. I’m Wang     C. Speaking              D. Are you Zhang

—Can I speak to Mr. Wang, please?

          —______. 

          A. Who are you?       B. I’m Wang.

         C. Speaking.          D. Are you John?

 —Can I speak to Mr. Wang , please ?    —       

    A. Who are you ?  B. I’m Wang .    C. Speaking       D. Are you john ?

---Can I speak to Mr Wang,please?

---________

1. A.
   Who are you?
2. B.
   I'm Wang．
3. C.
   Speaking．
4. D.
   Are you John?