问题补充：
In order to realize his dream, Bill Gates, richest man in the world, gave up studying in Harvard University, that is the most famous in the world. He set up a company and researching the computer software. An old saying go, “Interest is the best teacher.” I quite agree with this idea. I began to be crazy about English when I was a little girl. I got extreme interested in foreign cultures or customs. To meet me curiosity, I read in English stories every day. It seemed to be the best “meal” of a day. As a result, I always did very well in English exam. Interest is the key of success.richest 前加the
答案：
(答案→)richest 前加the
解析：文章以比尔盖茨的成功为例告诉我们兴趣是成功的关键。
【小题1】richest 前加the 根据句意Bill Gates是世界上最富有的人，所以用最高级。
【小题2】that改成which 这里是一个非限制性定语从句，从句中缺主语又指物，所以改为which.
【小题3】researching改成researched 这里and连接并列的谓语动词，是过去的事情，所以都用过去式。
【小题4】go改成goes 主语是单数，正如谚语所说。
【小题5】extreme改成extremely 此处修饰形容词应用副词。我对外国文化和风俗习惯变得非常感兴趣。
【小题6】or改成and根据句意应为风俗和习惯。
【小题7】me改成my 为了满足我的好奇心，应用形容词性物主代词。
【小题8】read in English中in去掉 read为及物动词，不用介词。
【小题9】exam改成exams exams是可数名词，不止一次英语考试，所以用复数。
【小题10】of改成to考查固定短语。The key to success 成功的关键
