Hello!__________________________?B:This is John speaking.___

Hello!_____who is it_____________________?
B:This is John speaking._____who's speakng_____________________?
A:This is Tom.Now I am in China. I am going to visit the 13 Imperial Tombs tomorrow.
B:That sounds exciting.Where are the tombs?
A:___they are in the city of Beijing_____________.
B:______why are you going there?_______________
A:Because I want to explore the tombs of ancient Chinese emperors.
B:___have a good time!_________
A:Thank you!

Hello!___Who's that_______________________?
B:This is John speaking.______Who's that____________________?
A:This is Tom.Now I am in China. I am going to visit the 13 Imperial Tombs tomorrow.

A：May i speak to John ？
B ：who are you ？

who is that ?
who is speaking with you ?
they are in the city of beijing
why do you visit there
Have fun