What are sentences for the words: Cynical, Tyranny, Falter, Pre-eminent, vivacious, apathy, obstinate?

I may be cynical, but I'm really tired of seeing the apathy up here. Students who are too obstinate to do their own work will falter in life! Don't sucb to tyranny of cheating! Be vivacious in your goal to be the pre-eminent model of academic honesty.