The first one is a and the second one is b
Por favor, <span>¿</span>me podría<span> dar una </span>habitación?
The sentence above uses good manners, but also gives a clear message of what you want, which is a room.
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.
1. balbuceó
2. se amontonaron
3. tarareó
4. se topó
5. escudriñó
6. fajo
7. debilitado
8. jirón