阅读下面材料，在空白处填入适当内容（不多于3个单词）或括号内单词的正确形式。
Lin Hai, a senior middle school student, had a problem recently. He used to get marks of over 110 points (out of 120 possible points) on his math tests.    during last term’s final exams, his math score was only 90 points. It was a shock. “I didn’t know what    (happen) ,” said Lin, who kept feeling nervous and frustrated about math during the   (follow) month.
Like Lin，many of us have setbacks in life. What would you do to deal    these setbacks ? Would you just let them be and give up? Lin chose to face his problems. His parents and teacher also gave him help. After some hard word he now gets marks   100 and 110 points on his math tests.   he still isn’t at his original level. Lin doesn’t panic anymore.
Chen Xing also has a story to tell. The 15-year-old girl is not good at    (do) sit-ups, which is necessary for the coming high school PE entrance exam.    has to do at least 35 sit-ups in a minute to pass the test. Most of Chen’s classmates can do 40.   , Chen could only do 20.    (feel) worried, Chen decided to do something. She did sit-ups for half an hour every day after school. Now, after a month, she can do 30 sit-ups a minute.