Book excerpt: Grammardog Teacher's Guide contains 16 quizzes for this Shakespearean tragedy. All sentences are from the play. Quizzes feature famous quotes ("Beware the Ides of March," "Et tu, Brute?" "Friends, Romans, countrymen lend me your ears," "let slip the dogs of war," "I am constant as the northern star," "It was Greek to me," "Yond Cassius has a lean and hungry look," "If you have tears, prepare to shed them now," "This was the most unkindest cut of all," "the fault, dear Brutus, is not in our stars but in ourselves that we are underlings").