<span>¿Por qué te da una receta el médico? Porque me duele la garganta.</span>
Answer: The song is called ‘Celebración’ by Jotdog.
The direct object pronoun would be "la" because la gasolina is feminine. In a sentence you could say:
"La compro en la estacion de servicio."
Direct object pronouns are placed before the verb generally.