Last Tuesday was a good day. The sun was high in the sky and the sky was very blue. Tom said goodbye to his parents and then took a bus to school for an exam. The exam was important to him. His parents expected him to get a good grade and hoped that he would get a place at a top university. Suddenly （突然） a lorry （货运汽车） stopped in front of the bus. Although the bus driver tried his best to stop，the bus still went into the lorry. There was a terrible noise. Luckily no one was hurt （受伤的） in the accident （事故）. Tom got off the bus. He felt a little. "What should I do if I can't get to the exam on time？"he said to himself. A policeman saw Tom and asked him whether （是否） he was OK. Tom told the policeman that he would take a very important exam at 9：00 a. m. and now it was already 8：40 a. m. The policeman picked up his phone and asked a police car to come at once. When it arrived，he asked the driver to take Tom to school as fast as he could. Tom arrived at school five minutes before the exam started. So Tom was able to take the exam on time.
