11.  The water in this lake is rather ................, like sea water.            ( salt) 12.   The.............of his wife was a great blow to him.                         ( lose) 13.  We`ll...........our room with some roses                                         (beauty) 14.  Trung's sense of humor ..........him from other students.               ( distinct) 15.  The homemade ice-cream ...........after it had been in the freezer for an hour. (hard) 16.  Where is the ............to his shopping centre?                                (enter) 17.  There's no easy .............to this problem                                        (solve) 18.  Don’t be so...............; we've only been waiting for a few minutes.         (patient) 19.  In ancient Greece, the owl was a symbol of ............                    (wise)