Answer: The answers are the following ones:
Question 1: Nosotros escribimos muchas composiciones en la clase de literatura.
Question 2: Esteban y Luisa aprenden a bailar el tango.
Question 3: ¿Quién no comprende la lección de hoy?
Question 4: Tú debes comprar un mapa de Quito.
Question 5: Ellos no reciben muchos mensajes electrónicos (e-mails) de sus padres.
Question 6: Yo busco unas fotos de mis primos.
Step-by-step explanation:
All the answers are using present simple as tenses and can be presented in regular forms of infinitive: -ar, -er, -ir.
Verbs that finish in -ar, like the verb "tomar", are conjugated following these forms:
1st person (singular): Yo tomo
2nd person (singular): Tú tomas
3rd person (singular): Él/Ella toma
1st person (plural): Nosotros tomamos
2nd person (plural): Ustedes toman
3rd person (plural): Ellos/Ellas toman
Verbs that finish in -er, like the verb "correr", are conjugated following these forms:
1st person (singular): Yo corro
2nd person (singular): Tú corres
3rd person (singular): Él/Ella corre
1st person (plural): Nosotros corremos
2nd person (plural): Ustedes corren
3rd person (plural): Ellos/Ellas corren
Verbs that finish in -ir, like the verb "cumplir", are conjugated following these forms:
1st person (singular): Yo cumplo
2nd person (singular): Tú cumples
3rd person (singular): Él/Ella cumple
1st person (plural): Nosotros cumplimos
2nd person (plural): Ustedes cumplen
3rd person (plural): Ellos/Ellas cumplen
It's important to state that this applies to regular verbs used in present simple.