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？