17.文中共有10處語言錯誤,請在有錯誤的地方增加、刪除或修改某個單詞.每處錯誤及其修改均僅限一詞;只允許修改10處,多者(從11處起)不計分. Learning English is great importance.English is widely used all over the world.It was often used in the international meetings.Most business letters are written in English.With a help of English we can learn modern science and technology from the developed countries.We can also introduce our achievement and experiences to other countries.Because of their importance,English is a requiring subject in high schools and colleges.Now many people are working hardly at English.It's very important to learn English well.If we learn English well,we can serve for our country better.So I suggest most Chinese can learn it well.