Hob sat in the doctor's waiting-room. On the chairs at the wall other patients were sitting. They all looked sad except Hob who was reading an exciting story in a magazine. Just then the doctor came in to say that he was ready to see the next person. Hob got up and went into the consulting room.
Before Hob could say a word the doctor said, "Now what's the trouble? Sit down there and we'll have a look at you. Unfasten your jacket and your shirt, please. I'll listen to your heart." Hob tried to speak, but the doctor interrupted him and ordered him to say "ninety-nine". Hob said it. "Now let me see your throat, open your mouth wide." The doctor had a good look and then he said, "Well, there's nothing wrong with you." "I know there isn't," said Hob, "I just came to get a bottle of medicine for my uncle."
(From Essential English for foreign students by С. Е. Eckersley, Lnd.. 1977)