Mary:Tom,I couldn't write my composition about dreams.What about you? Tom:I wrote it yesterday. Mary:What did you write about? Tom:I wrote about my strangest dream. Mary:Can you tell it to me? Tom:Yes,of course.I was travelling in a spaceship.Then,I landed on the moon,I met an alien while I was walking on the moon. Mary:Alien?What is ''alien''? Tom:Someone from another world. Mary:That is exciting Go on.I'm listening to you.Could you speak to it? What was the alien like? Tom:He had three eyes and four ears. Mary:What?Three eyes and four ears? Tom:Yes.I'm sure he could see and hear better than us. Mary:What happened the? Tom:He had a probe in one hand and he was coming towards me. I couldn't run away. Mary:A probe?What does it mean? Tom:It is a long,thin metal instrument to examine something. Mary:What was he doig with the probe? Tom:I couldn't see clearly,but I think it was ex*****ng the lunar soil. Mary:And?I want to hear the rest of your dream. Tom:You can't. Mary:Why? Tom:Because nothing happened then.I woke up.