阅读理解

    A dentist(牙医) was starting his work in the morning. Suddenly a man ran in. His face was red and he could only say "Quick! Quick l". The dentist thought he must be very sick. His assistant (助手) helped to make the man sit in a chair. The dentist gave the man some medicine to make him sleep. Then, he looked into the man's mouth and pulled out all the bad teeth. When the man woke up, he said in a low voice, "Quick, doctor, quick."

    "It's all right now," the dentist told him. "It's over."

    "You don't understand," said the man. "I came to tell you that your house is on fire."

根据上述内容．判断下列句子正误。