変かえるkaeruto changeUsages of kaeru段階だんかいごと に 対策たいさく を 変かえること が 大切たいせつ です。dankaigoto ni taisaku o kaerukoto ga taisetsu desu.It is important to change measures at each stage.Elon.io is an online learning platformWe have hundreds of Japanese lessons and thousands of exercises.Start learning Japanese now