[填空题]Many people who live in cities say that they dislike city life. They say the city that they live in is {{U}} (11) {{/U}}, dirty and crowded. They are {{U}} (12) {{/U}} the traffic and the pollution in the air.
But not many people {{U}} (13) {{/U}} in cities are happy when they have to stay in the country for two or three weeks. They {{U}} (14) {{/U}} the quiet, the clean air and the beautiful healthy surroundings, but they miss the stores and restaurants, the movie theater and the {{U}} (15) {{/U}} of the city.