to start singing suddenly out of happiness
嬉しさで突然歌い始める (ureshisa de totsuzen utaihajimeru)
"He burst into song when he got the good news."
"彼は良い知らせを受け取ったとき、嬉しさで歌い始めた。" (kare wa yoi shiraseru wo uketotta toki, ureshisa de utaihajimeta)
to meet expectations or standards
to start feeling affection or liking toward someone
to sleep at someone else's house for a night
to have ambitious and grand goals
to imagine your stress disappearing like something drifting...
to attract investors or funds