https://online2.tingclass.net/lesson/shi0529/0009/9908/7.mp3
https://image.tingclass.net/statics/js/2012
Joe: Hello, May I speak to Mr. John Smith?
Secretary: I'm sorry. He's out to lunch. Would you like to leave a message?
Joe: What time do you expect him back?
Secretary: Mr. Smith should be back in half an hour.
Joe: Thank you! I'll try back later.
