Sara ¿en qué (1) piensa pensar? ana (2) you answered (blank) en el fin de semana. quiero ir a un concierto con unos amigos. sara ¿qué (3) you answered (blank) (leer)? ana (4) you answered (blank) una novela de mario benedetti. sara ¿qué (5) you answered (blank) (beber)? ana (6) you answered (blank) una soda. sara ¿qué (7) you answered (blank) (escribir)? ana (8) you answered (blank) unos apuntes para el ensayo de literatura. sara ¿de qué te (9) you answered (blank) (reírse)? ana (10) ¡me you answered (blank) de tus preguntas!

In Spanish, if you want to conjugate a verb, you need to determine first which is the subject (yo, tú, él, ella, eso, nosotros/as, vosotros/as, ellos/as) in the sentence, then the verbal tense (present, future, past participle, gerund…), and  the mode (if it is imperative, indicative or subjunctive) as well.

In this exercise, almost all the verbs are in present tense. If also the verb is regular (ends in AR, ER, IR), we just have to know the following rules:

Regular verbs with ER

Change ER to:

•Yo: o  

•Tú: es  

•Él, Ella, eso: e  

•Nosotros/as: emos  

•Vosotros/as: éis  

•Ellos/as, Ustedes: en  

Regular verbs with AR

Change AR to:

•Yo: o  

•Tú: as  

•Él, Ella, eso: a  

•Nosotros/as: amos  

•Vosotros/as: áis  

•Ellos/as, Ustedes: an  

Regular verbs with IR

Change IR to:

•Yo: o  

•Tú: es  

•Él, Ella, eso: e  

•Nosotros/as: Imos  

•Vosotros/as: ís  

•Ellos/as, Ustedes: en  

Well, now that is clear. Let’s begin with the exercises following the rules listed above:

SARA ¿En qué (1) piensas (pensar)?  

In this case the subject is Tú

ANA (2) Pienso en el fin de semana. Quiero ir a un concierto con  

unos amigos.  

In this case the subject is Yo

SARA ¿Qué (3) lees (leer)?  

In this case the subject is Tú

ANA (4) Leo una novela de Mario Benedetti.  

In this case the subject is Yo

SARA ¿Qué (5) bebes (beber)?  

In this case the subject is Tú

ANA (6) Bebo una soda.  

In this case the subject is Yo

SARA ¿Qué (7) escribes (escribir)?  

In this case the subject is Tú

ANA (8) Escribo unos apuntes para el ensayo de literatura.  

In this case the subject is Yo

SARA ¿De qué te (9) ríes (reír)?  

In this case the subject is Tú

ANA (10) ¡Me río de tus preguntas!

In this case the subject is Yo

Sentences (9) and (10) are a special case, reír is an irregular verb, and does not follow the rules. For this specific irregular verb, its conjugation in simple present, indicative mode is:

•Yo: río  

•Tú: ríes  

•Él, Ella, eso: ríen  

•Nosotros/as: reímos

•Vosotros/as: reís  

•Ellos/as, Ustedes: ríen

there is no "following"