https://online1.tingclass.net/lesson/shi0529/0000/704/1_38.mp3
https://image.tingclass.net/statics/js/2012
M: Excuse me!
W: May I help you?
M: Yes, I'd like to send this book to France.
W: Let me weight it first. That'll be 14 dollars.
M: Can it go in an envelop?
W: Of course, it's 4 dollars now.
M: Do I need stamps?
W: No, you don't. We use computers now.
M: When will it arrive?
W: In a month.