39. Hello, is that Mary, Mary Jones?40. Hello, this is John Hall. Is Mr.Li in?41.May I speak to Ms. Green, please?42. May I ask who is calling, please?43. Would you like to leave a message?44. Can I take a message?45.Operator, please put me through to the manager's office.46. Ok, just a minute.47. Please call 341-5581 extension 624 to contact me.48. Hold on, please. (pause) I'm sorry. He's not in his office.49. Sorry, Sir, the line is engaged. Could you try again later?