----Did you get what the teacher said?----No. So softly _____ that I could hardly hear her.

Not until he met with the difficulty _______ the importance of group work．

I have been living in the United States for twenty years, but seldom _____ so lonely as now．

（湖南省怀化市2014年高三第二次模拟考试）29. — When is he willing to lend his friends some money?— Only when ______ hard enough.

Not until my first book was put on the top 10 list________ writing could really make a difference in my life.