to show sudden happiness or excitement on your face
顔に突然の喜びや興奮を表す (kao ni totsuzen no yorokobi ya koufun wo arawasu)
"His face lit up at the news of his promotion."
"昇進のニュースを聞いて、彼の顔が輝いた。" (shoushin no nyuusu wo kiite, kare no kao ga kagayaita)
to finish work and mentally leave for the rest of the day
to complete missing parts of understanding or knowledge
to express love, trust, or care freely
to use past achievements as a foundation for more success
to make yourself calm and relaxed
to try to keep control or authority