1. A house in the city is more expensive than a house in the country. (Cheap)                                      2. The air in the city is more polluted than the air in the country. (Fresh)                                                3. Life in the city is more interesting than life in a small village. (Boring)                                              4. The first question in the test was easier than the second one. (Dificult)                                           5. The bookstore is at the side of the grocery srore. (Next)                                                                Các bạn giúp mình với nha !