Ollie Simmons was good at maths, but Ruby Riley wasn't. Well, Ruby didn't think she was. She s (坐) next to Ollie and so she just copied him. This was the best way she had found to do maths and she didn't have to think at all.
One day the teacher said, "We will be having a maths test after lunch." Ruby f (感觉) there were butterflies in the stomach. "Can I copy off you?" she whispered to Ollie. Ollie thought for a minute. "What will you give me?" he whispered back. Ruby s (给……看) Ollie a stone she had. It was r (圆形的，球形的) and smooth and the colour of the sea. "OK!" he said, "Give me the stone, and then you can copy my answers." Ollie got full marks in the maths test and so did Ruby. Their n (名字) went on the top of the maths champion chart.
Every week there was a maths test and every week Ollie and Ruby got full marks together. Ollie had to s (分享，共享) the top place with Ruby, but it was worth it. He had a torch, a key chain, a g (高尔夫球) ball and a gift box!
One day, there was a maths test again. This time, Ruby picked a watch, t (认为，以为) everything would go as usual—Ollie would let her copy and they would be on the top of the chart together again. But she was wrong. The headmaster came into Ruby's class. "I want to see Ollie Simmons," she said. Ollie was gone for a long time. Then the door o (打开). It was the headmaster again. "Ruby Riley," she said, "Come with me, please." Ruby felt like a bird in a c (笼子)—there was no way to escape. The headmaster told Ruby that every lunchtime for five weeks she had to do maths. "You have to learn to think for yourself," she said. "And Ollie has to learn a lesson, too. He's going to teach you."
