听力原文：M: Five airmail stamps and three regular sta

听力原文：W: How was your trip to the Grand Canyon？M: It was excellent! We spent five days

听力原文：W: Do you want anything else？M: Yes, t still want some salad, some bread and some

听力原文：There are three groups of English learners: beginners, intermediate learners, and

听力原文：M: How long can I keep the book？W: Three weeks, but you can renew it if you need

There are two hundred and forty stamps in the sheet, arranged in twenty rows of twelve sta

听力原文：M: Where did you and Tom go on vacation？W: W