<h2>1. Right answer:</h2><h3>está</h3><h3 />
Está is the conjugation of the verb estar for the third person singular in the simple present. The simple present tense is used to talk about habitual actions or routines. On the other hand, we use the verb estar is being used here to indicate an ongoing action, that is, Armando spends all day in the swimming pool. Thus:
<em>Armando </em><em>está</em><em> en la piscina todo el día</em>
<h2 /><h2>2. Right answer:</h2><h3>puse</h3><h3 />
Puse is the conjugation of the verb poner for the first person singular in the preterite tense. This tense is one of two simple past tenses. It is used to describe actions that took place or were completed at a certain point in the past. So, the action <em>to put the envelope in the mailbox </em>took place at a certain point in the past. Therefore, the sentence is:
<em>Yo </em><em>puse </em><em>el sobre en el buzón</em>
<h2>3. Right answer:</h2><h3>mandaste</h3><h3 />
We can use several ways to indicate that a person sent a postcard. So we can use the verb mandar or enviar. Both verbs mean the same word in English <em>to send. </em>Thus, mandaste is the conjugation of the verb mandar for the second person singular in the preterite tense. Other way to say this is by using the conjugation enviaste of the verb enviar. Finally, the sentence is:
<em>Tú </em><em>mandaste </em><em>la tarjeta postal a tu familia</em>
<h2>4. Right answer:</h2><h3>pusieron</h3><h3 />
Pusieron is the conjugation of the verb poner for the third person plural in the preterite tense. So <em>los viajeros </em>can be replaced by <em>ellos </em>that is the subject pronoun for the third person plural. Here the action is <em>to put the clothes in the suitcase. </em>Finally, the sentence is:
<em>Los viajeros </em><em>pusieron </em><em>la ropa en la maleta</em>
<h2>5. Right answer:</h2><h3>estampilla</h3><h3 />
Basically, estampilla and sello means the same word in English stamp. The only difference is that <em>estamplilla </em>is a feminine noun and <em>sello </em>is a masculine one. Since the word before the blank is the indefinite article <em>una </em>that is feminine and singular, the noun that matches this article must be feminine and singular as well. That's the reason why we choose <em>estampilla </em>over <em>sello.</em>
<em>Yo pongo una </em><em>estamplilla</em><em> en el sobre</em>
