This morning, however, a fireman accidentally discovered the cause. He noticed the     1     of a snake which was wound round the electric wires of a 16,000-volt power line. In this way, he was able to solve the mystery. The     2     was simple but very unusual. A bird had snatched up the snake from the ground and then     3     it on to the wires.

We have just moved into a new house and I have been working hard all morning. I have been trying to get my new room     1    . This has not been easy because I own over a thousand books. To make matters worse, the room is rather small, so I have temporarily put my books on the floor. A short while ago, my sister helped me to carry one of my old bookcases up the stairs. She went into my room and got a big surprise     2     she saw all those books on the floor. This is the     3     carpet I have ever seen, she said.