[解析]
61.spoken,考查过去分词,此处是过去分词短语作后置定语,speak和language之间是被动关系,所以用spoken.
62.where,考查定语从句,先行词为42 countries,在从句中作地点状语,也可以用in which.
63.are found,考查被动语态,主语为"most native speakers of English,绝大多数以英语为母语的人",和find之间是被动关系,并且文章说的是现在,所以用一般现在时态的被动.
64.An,考查固定搭配,a number of"大量的",number前的形容词equal是以元音开头的,所以用an,放在句子开头要大写.
65.is,考查主谓一致,主语为"te number of people who learn English as a foreign language",the number of+复数名词作主语时,谓语用单数形式.
66.widely,考查分词用法,修饰过去副词spoken应该用副词.
67.to learn,考查不定式,"be requested to do sth.被要求做某事."所以用不定式作 宾补.
68.using,考查现在分词,主语"Chinese businessmen,taxi drivers and student"和use是主动关系,所以用现在分词作方式状语.
69.on,考查介词用法,on the radio固定搭配,意思为:"通过收音机".
70.it,考查it的用法,本句主语为后面的不定式to have a good knowledge of English,当不定式作主语时,常用it作形式主语.