Vocabulary consisting only from characters you are able to read
勉める
つとめる
to endeavor (endeavour), to try, to strive, to make an effort, to exert oneself, to be diligentichidan, verb, vtrans
果たす
はたす
(1)to accomplish, to achieve, to carry out, to fulfill, to fulfil, to realize, to execute, to perform, to do, (suf,v5s) (2)to do ... completely, to do ... entirely godan, verb, vtrans