The correct answer is dice.
•Por qué dice él gracias?
You are going to use the word dice to fill the blank because is the correct conjugation in the sentence.
On English the sentences should be:
Why does he says thank you?
<h2>Correct answer:</h2><h3>B. Les aconsejo que vean la catarata</h3>
Both nos and les are indirect object pronouns. Nos is the indirect object pronoun for the first person plural and les is the indirect object pronoun that matches the formal <em>you (ustedes)</em>. Recall that an Indirect Object Pronoun is a person that receives the action of a verb indirectly. Its purpose is to tell you to whom or for whom something is done. On the other hand, vean is the conjugation of the verb ver that matches the formal <em>you (ustedes) </em>in the simple present. Finally:
- ¿Qué nos aconsejas que hagamos?
<em>(What do you advise us to do?)</em>
- Les aconsejo que vean la catarata.
<em>(I advise you to see the cataract.</em>
Habia because Habia means there were. On the other hand we have contaba which men tell, saludaba which mean said hi, and nacia which means born. so your best bet is Habia