It seems like your sentence was cut off, but based on what you've written, it appears you might be trying to say that "Japanese students work very hard" or something similar.
If that's the case, here is the complete sentence in English and Japanese:
English: Japanese students work very hard. Japanese: 日本の学生はとても一生懸命働きます。(Nihon no gakusei wa totemo isshōkenmei hatarakimasu.)
If you meant something different, please provide more context or complete the sentence so I can better assist you.