elearn site

1. Liz is at the  .
Liz:   me. I′d like to send this letter to the USA. How much is it?
Clerk: It′s 9,500 dong.
Liz: And I need some envelopes. How much are  ?
Clerk: They are 2,000 dong.
Liz: OK. I′ll take them. How much is that altogether, please?
Clerk: Well, the stamps for your letter   9,500 dong. The envelopes are 2,000 …. That is 11,500 dong altogether then, please.
Liz: Here you are. 15,000 dong.
Clerk: And here is your  . Thanks.
Liz: Thank you. Bye.