By supposing that I am babysitting my little brother, then I must use the verbs hacer and ser to tell him to do three things. To do this, we need to use <em>the imperative mood</em>, which is a mood used to tell someone to do something in a direct manner. Put another way, the imperative mood are commands. So:
<h2>FIRST. </h2><h3>Haz la tarea</h3>
Haz comes from the verb hacer and is used to tell someone to do something. Basically, here I am telling my brother to do his homework and this sentence translates into <em>do your homework.</em> So, <em>la</em> is the feminine definite article that translates into <em>the</em> and <em>tarea</em> is a feminine noun translating into homework.
<h2>SECOND.</h2><h3>Sé educado</h3>
Sé comes from the verb ser and is used to tell someone to behave in a certain manner. Hence I am telling my brother to be polite. So this sentence translates into <em>Be polite</em>. Recall that we use the verb <em>ser</em> to talk about permanent or lasting attributes.
<h2>THIRD.</h2><h3>Haz la cama</h3>
Here we also use the verb hacer. So I am telling my brother to make his bed and this sentence translates into <em>make the bed</em>. So we also use here the definite article (feminine and singular form) because the noun cama is also feminine and singular
<h2>PART 2.</h2>
For these answers, we need to use direct object pronouns. A direct object pronoun replaces a direct object, that is a noun that directly receives the action of a verb in a sentence. Therefore:
<h3>a. No, no los veo</h3>
To this question, we need to give either an affirmation or negation. So we choose to give a negative answer. Hence we start answering the question with a negation using the word no. Then, using the same word no again we start giving the answer. In this question, the direct object is Juan y Pablo. Since, Juan y Pablo matches the third person plural, that is, this can be replaced by ellos (they), then the direct object pronoun for the third person plural in masculine form is los. So we replace <em>Juan y Pablo</em> by <em>los</em>.
<h3>b. Sí, lo compré </h3>
We need to give either an affirmation or negation to this question. So we choose to give a positive answer. In this question, someone wants to know if I bought a gift in a certain moment in the past. First of all, the direct object is un regalo. Since un regalo matches the third person singular (masculine form), then we need to replace this by the direct object pronoun for the third person singular in masculine form, which is lo. So we replace un regalo by lo.
<h3>C. No, no te llamé</h3>
Here we also choose to give a positive answer. If the answer to a question is negative, two negative words are required, that's why we answer: <em>No, no te llamé. </em>Next, we use the word te that is the direct object pronoun for the second person singular. On the other hand, llamé is the conjugation of the verb llamar for the first person singular in the preterite tense.
<h2>PART 3.</h2>
We need to choose three verbs and conjugate them in the present progressive. So we have choose the verbs decir, creer and seguir
<h2>FIRST.</h2><h3>Using decir</h3>
The present progressive is used to talk about something that is happening now. To do this, we use the following formula:
<em>estar + present participle</em>
So suppose you are in a party and you call a friend up. Then you tell him that everyone in the party wants him to come to the party. Therefore you can use the following sentence in the present progressive:
<em>Estamos diciendo que debes venir</em>
<h2>SECOND. </h2><h3>Using creer</h3>
Suppose you are sick and a lot of people visit you. So you have faith that you will get better soon. Hence you say everyone who comes to visit you this words:
<em>Yo estoy creyendo que mejoraré</em>
<h3>THIRD.</h3><h3>Using creer</h3>
Suppose you admire a football player and he is playing in a field and you are there. Then, there is a moment in which this man is giving autographs to his fans and you come to get your own autograph. So you tell him that you are in a football academy to be a great football player. Therefore, you might say:
<em>Estoy siguiendo tus pasos</em>