Speaker A: May I speak to Dr. Wang, please?Speaker B :__________A.Hold on a second, please
Speaker A: May I speak to Dr. Wang, please?
Speaker B :__________
A.Hold on a second, please. I" 1l put him on.
B.Sorry, Mr. Wang is not available fight now.
C.I am not sure because I don" t know what he is doing.
D.Thank you very much for calling.