To start thinking carefully about something
Commencer à réfléchir sérieusement à quelque chose (commencer a reflechir serieusement a quelque chose)
"It’s time to put your thinking cap on for the quiz."
"Il est temps de se mettre à réfléchir pour le quiz." (il e tan de se mettre a reflechir pour le quiz)
to adapt to the changes in society or technology
to function perfectly or very effectively
a conflict where both sides refuse to give up
to start dancing, especially at a party
to maintain a happy home while others are away
to organize and host a celebration