单选题
A. Hello B. I’m afraid C. Excuse me D. Could you tell me E. Thank you F. Sure Miss G. Do me a favor please H. What can I do for you Customer: 56 , but could you help me? Clerk: With pleasure. 57 ? Customer: 58 where I can find Mr. Zhang? Clerk: 59 . Mr Zhang is upstairs. Customer: 60 very much. Clerk: Not at all, Miss.