Answer:
Do you think that the contribution of Afro-Americans has been important in our country? why? Please can you help me now?
They are both national libraries and have been around for a long time.
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.
Answer:
El avión sale cuando está despegando - the plane leaves when it is taking off
El avión sale cuando está aterrizando - the plane leaves when it is landing
El avión sale cuando hay una demora - the plane leaves when there is a delay
El avión sale cuando los pasajeros hacen las maletas - The plane leaves when the passengers pack their bags
Explanation:
the answer is option one