Character cannot be 16 in ease and quiet. Only 17 experiences of trial and suffering can the soul be strengthened, vision cleared, ambition inspired and success 18 . You gain strength, experience and confidence by every experience 19 you really stop to look fear in the face.... You must do the thing you cannot do. And remember, the finest steel gets sent through the hottest furnace（熔炉）. A 20 is not one who never fails, but one who NEVER QUITS!
1. A. after B. before C. since D. until
2. A. win B. gain C. fail D. lose
3. A. seemed B. pretended C. appeared D. happened
4. A. survival B. challenge C. rescue D. illness
5. A. making B. leaving C. reaching D. causing
