从方框中选出适当的句子补全对话，有两项多余。(10分)
A: Excuse me, are you Sam?
B: Yes, I am.    
A: My name is Bob.
B:    
A: Nice to meet you, too.    
B: No, I’m not.     Where are you from?
A: I’m from Shanghai.    
B: Thank you.

A. How do you do? B. Welcome to Beijing. C. Welcome to Shanghai. D. Are you from England? E. What’s your name? F. I’m from the U.S.A. G. Nice to meet you.