完形填空。
It is universally known that friendship is one of the permanent themes in the literature of all languages. Friends are people who willingly and readily help us when we are in trouble, and show__1__for us when we are in misery. This is__2__human beings were born to need the warmth and laughter of friends. Some of us like__3__friends, while others different friends. Personally，I prefer both.
It goes without saying that having similar friends has many__4__， We can feel a renewed sense of__5__when we have a group of old friends who would__6__our sufferings and happiness. __7__， old friends always know how to__8__mutual trust(互信)and how to avoid__9__conflicts. I always feel__10__when I meet an old friend after a long__11__. Immediately, hearty laughter__12__the atmosphere.
