根据句意和首字母提示，完成短文。
    People live in different kinds of houses in the world. Usually, each house has i own living room, bedroom, kitchen and b     . Different houses have different n     . What are they? Now, let's take a look.
    A flat is usually in a building. There are usually many f   living in the same flat building. People in a flat building s    the same stairs(楼梯) and lifts(电梯) to go up and down.
    A townhouse has two floors. In a townhouse, the kitchen, the living room and dining room are usually on the ground floor, and the bedrooms are usually on the f   floor.
    A farmhouse is a house on a farm. There are many farmers living there. There is a large yard (院子) in f  of it. There are also some "houses" for cows and hens near the farmhouse.The field is not f    from the farmhouse, so farmers always go to the field on f  
    A dormitory is a large bedroom in a s   , and every 4--8 students share one dormitory. They share the same bathroom, but each student has his or her own bed. Students can learn how to get along well(相处 ) with each other in a dormitory.