1- A sofa is(comfortable)..............than a chair. a- comfortabler                b- more comfortable                      c- more comfortabler 2- Hoi An is (historic)...............than Hue. a- more historic   b- historicer   c- historicest  3- The city is (crowded)........than the country. a- crowdeder                            b- more crowded                       c- most crowded 4- Speaking test is (difficult).........than writing test. a- difficulter                          b- more difficulter                       c- more difficult 5- She is relly (friendly).........than she looks. a- friendlier                                b- more friendly                        c- friendly more