English is useful language in the world线上填a还是/?language不是不可数么?

__________ useful language English is!(感叹句） In_____life,English is very useful.(day) To learn English is important and useful. English is a useful tool.写作 Now that you know English is useful,you should study hard._ you know English is useful,you_study____ you know English is useful,you____study hard(同义句） 英语翻译____ _____ ______,English is very useful. English is very useful l ,I think要快! English is one of the useful languages in ____________ metings 文章:english is useful做小报用的,别写太深, i think English is most useful of all the subjects. English is the language rated as most useful to know To learn English is useful（改为同义句） To learn English is important and useful.改为同义句 useful English an is language important.连词成句 To learn English is useful.换同义句 How useful English is!(保持句意不变) Do you think liyang's crazy english is useful useful English is!A.How B、What和__ useful the English is！A.How B、What