Listen to the tape then answer this question. Which John Smith does Graham Turner think he is talking to? 听录音，然后回答问题。格雷厄姆.特纳以为他在和哪一个约翰.史密斯通话？
GRAHAM TURNER: Is that you, John? JOHN SMITH: Yes, speaking. GRAHAM TURNER: Tell Mary we'll be late for dinner this evening. JOHN SMITH: I'm afraid I don't understand. GRAHAM TURNER: Hasn't Mary told you? She invited Charlotte and me to dinner this evening. I said I would be at your house at six o'clock, but the boss want me to do some extra work. I'll have to stay at the office. I don't know when I'll finish. Oh, and by the way, my wife wants to know if Mary needs any help. JOHN SMITH: I don't know what you're talking about. GRAHAM TURNER: That is John Smith, isn't it? JOHN SMITH: Yes, I'm John Smith. GRAHAM TURNER: You are John Smith, the engineer, aren't you? JOHN SMITH: That's right. GRAHAM TURNER: You work for the Overseas Engineering Company, don't you? JOHN SMITH: No, I don't I'm John Smith the telephone engineer and I'm repairing your telephone line.
