to have a part in something
何かで役割を果たす (nanika de yakuwari o hatasu)
"Everyone played a role in making the show successful."
"全員がショーを成功させるために役割を果たした。" (zenin ga sho o seikou saseru tame ni yakuwari o hatashita)
to think about only one thing all the time
a person who keeps their promises
to treat someone the same bad way they treated others
someone who has influence in the selection or appointment of...
be careful what you say because someone might be listening
used to say that an activity has been successful up to this...