I do not know the answer to a question
Je ne connais pas la réponse à une question (zhuh nuh konneh pah lah raypons ah oon kes-tyon)
"I don't know what time the movie starts. Your guess is as good as mine."
"Je ne sais pas à quelle heure commence le film. Ton estimation vaut la mienne." (zhuh nuh seh pah ah kel er komons luh film ton estimasyon voh lah mienne)
a brilliant and creative idea or action
to become aware or informed about something
to do what one has promised
to take personal responsibility for your actions
to fail completely
to have the right to speak in a discussion