I'm not exactly sure what you're asking, but I'll try.
The answer is "compro" because it's past tense. I should know, I speak both Spanish and English.
Could you please make it clearer as to where the blank is?
Sí, me gusta mucho está delicioso
Answer:
La vacuna contra el sarampión funciona inyectando un poco del virus vivo pero debilitando el paciente. Esto hace que tu cuerpo genere anticuerpos para pelear contra el virus
Explanation:
