Mr. White works in a hospital. He's a good doctor and he is nice to his patients, people in the town like him very much. One morning, a woman went to his office. Mr. White asked," What's the matter, Madam?" " It was my birthday yesterday, sir." said the woman, " My son gave me a present. But I couldn't put myself in it." " Don't worry, Madam." said Mr. White," It's easy. Do what I tell you, you'll soon lose some weight(体重), then you can wear your new coat." "You're wrong, sir." The woman was very sad," He bought me not a coat, but an expensive car."