SpeakerA、Firstly, allow me to introduce myself. My name is JohnBrown, manager of the company.
SpeakerB、______
A. You must be mistaken. I don' t know you at all.
B. Hello ,Brown! I haven' t seen you for ages.
C．How do you do, Mr.Brown Very happy to see you.
D．Hi, John ! Welcome toChin