Usar "third-year" en una oración

1. And sure enough, on the strength of my standing I was admitted, a month later, in that college for the third-year BSc Mathematics

2. After several days, a pair of crows take to standing on his shoulders, chiseling away with their beaks, and eventually the custodian comes out with two third-year boys and they hack the corpse’s feet out of the ice with a maul and tip him into a cart and roll him away

3. They shot each other over disagreements in the playground, they threatened the teachers if they received low grades on examinations, and one of them, a third-year student at La Salle Academy and a retired colonel in the militia, shot and killed Brother Juan Eremita, Prefect of the Community, because he said in catechism class that God was a full-fledged member of the Conservative Party