〜しなくてはならない (translations)→ demand require worth
〜すればいい (translations)→ could ought
かまわない (translations)→ careless forget happy ignore leave let
しかるべき (translations)→ appropriate certain due good nice proper reasonable right suitable
たい (translations)→ desire need propose want would
仕方がない (translations)→ desperation finally inevitable justify nothing pity though unavoidable understand very
当然 (translations)→ automatically deserve eventually expectantly fully inevitably logical naturally obviously only perfectly readily understandably well