Answer:
El gobierno tiene que arreglar la contaminacion del sure para cuidar de nuestro <em><u>medio ambiente.</u></em>
Explanation:
The clue here is 'contaminación.'
Imperfect= Past there for the answer would be
Nosotros Buscavamos la llave
<h2>Right answer</h2><h3>serio</h3><h3 />
In this exercise, <em>Julieta</em> and <em>Nicolás </em>are being described using two different adjectives. So the adjective that describes <em>Julieta </em>is <em>graciosa (funny). </em>It is given in feminine and singular form because adjectives must agree with nouns they describe in both gender and number, that is, <em>Julieta</em> is a feminine and singular noun. From the list, the only adjective that is related to the one that describes <em>Julieta </em>is <em>serio </em>because this is the opposite characteristic of being funny, that is, <em>serio </em>means <em>serious.</em>