1.los aficionados se cuando los jugadores no jugaron bien la semana pasada.
aburrimos
aburrió
aburren
aburrieron

2. ¡estoy enjoado! el equipo el partido el martes pasado.
peder
perdió
perdí
perdiste

3.los atletas para ganar el campeonato ayer.
compitió
compiten
competimos
compitieron

show the underlined word, so i can you. or spell it

corras is the only one that is informal but doesn't follow the suffix rule. correr is the verb. corre is the formal verb form. corra would be used as the formal is corre ended with an a.

your best bet would be corras, it's the only one that is informal but is still wrong

yo the answer is incorrect my dude. good luck! ⊂°ω°⊃