A、The couple cook the dishes and the children help them. B、The husband does the cooking and the wife serves as the waitress. C、T

If you visit a big city anywhere in the world, you will probably find a restaurant which serves the food of your native country. Most large cities in the United States offer an international sample of foods. Many people enjoy eating the food of other nations. This is probably one reason why there are so many different kinds of restaurants in the United States. A second reason is that many Americans come from other parts of the world. They enjoy tasting the foods of their native lands. In the city of Detroit, for example, there are many people from Western Europe, Greece, Latin America, and the Far East. There are many restaurants in Detroit which serve the foods of these areas. There are many other international restaurants too. Americans enjoy the foods in these restaurants as well as the opportunity to better understand the people and their way of life. One of the most common international restaurants to be found in the United States is the Italian restaurant. The restaurant may be a small business run by a single family. The mother of the family cooks all of the dishes, and the father and children serve the people who come to eat there. Or it may be a large restaurant owned by several different people who work together in the business. Many Italian dishes that Americans enjoy are made with meats, tomatoes and cheese. They are very delicious and tasty.
Questions 20 to 22 are based on the passage you have just heard.
20. Why are there so many international restaurants in the United States?
21. Why do Americans like to go to international restaurants apart from enjoying the foods there?
22. How is the typical Italian family restaurant run in the United States?