To make a sincere promise.
真摯な約束をする。 (shinshi na yakusoku o suru)
"He gave his word that he would finish the job."
"彼は約束をしました、彼は仕事を終えるつもりです。" (Kare wa yakusoku o shimashita, kare wa shigoto o oeru tsumori desu)
to forget something accidentally
to prepare something for easy execution
to prepare to fight or compete strongly
Have confidence; believe in your ability.
To try to do too many things at once, leaving no energy for...
to understand or solve the real cause of something
