David: Hi, Sue. How was your weekend?
Sue: Oh, really good. I went to Stonehenge with my host family.
David: Stonehenge?
Sue: Yes, that's right. Have you ever been there?
David: Yes. I went there last month. I really enjoyed it.
Sue: Me too. Stonehenge is the best known and probably the most remarkable of prehistoric remains in the UK.
David: Yes. It has stood on Salisbury Plain for about 4,000 years. You know, there have been many different theories about its original use.
Sue: Yes, I know. My host father told me that one of the theories is that it was a place from where stars and planets could be observed.
David: Yes, but no one is really certain why it was built. One of the things people have discovered is the positions of some of the stones relate to the movements of the sun and moon, so that the stones could be used as a calendar.
Sue: That's interesting.
David: Did you go to Oxford too? It's not far from Stonehenge.
Sue: No, we didn't, because of the time. My host family had to be back before 3 in the afternoon.
David: What a pity. You should go sometime. It's very interesting too.
Sue: Yes. I hope I can sometime.