はげ
hagemu

Godan Verb (mu)

1. to work hard; to try hard; to strive; to endeavour; to endeavor; to devote oneself to; to make an effort; to be zealous

Intransitive
いままで以上 いじょうにいっそう勉強 べんきょう はげみなさい。
imamade ijōni issō benkyōni hageminasai.
You should study even more than before.