Hello, I'm a Spanish speaker and would like to help you. All the verbs are in Present Tense Form. In Spanish, the simple present tense (el presente or el presente de indicativo) is used to talk about habitual actions, routines, things happening now or in the near future, universal truths, facts, hypotheticals, lapses of time, and for ordering in restaurants and stores. There are both regular and irregular indicative forms.
Regular forms: In Spanish, you can recognize some endings for regular verbs, one for ar verbs, one for er verbs and one for ir verbs. Thus, if you want to conjugate an ar verb, take away the infinitive ending ar and add the ending that matches the subject. On the other hand, if you want to conjugate an er verb, remove the infinitive ending er and add the ending that matches the subject. Finally, to conjugate an ir verb, take away the infinitive ending ir and add the ending that matches the subject.
Irregular forms: There are some changes when using the present tense yo conjugations, so these changes build up the irregular form. In this way, verbs ending in guir, ger, or gir undergo a spelling change in their present tense yo forms. First, for verbs ending in guir, the yo form ends in go. Second, for verbs ending in ger or gir, the g in the yo form changes to a j. On the other hand, there are some exceptions regarding ar, er and ir verbs, so there are some of these types of verbs that have an irregular form.
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So, solving this problem we have:
1. Tú miras la pizarra.
Verb: Mirar
Conjugation: Miras (Matching the second-person singular)
2. Ustedes estudian en la biblioteca.
Verb: Estudiar
Conjugation: Estudian (Matching the second-person plural)
3. ¿Por qué habla Juan Miguel por teléfono?
Verb: Hablar
Conjugation: Habla (Matching the third-person singular - Male)
4. ¿Quién participa en las actividades?
When asking who does something the verb goes after quién and its conjugation fits the third-person singular. In this case, participa.
5. ¿Trabajas tú por la tarde?
Verb: Trabajar
Conjugation: Trabajas (Matching the second-person singular)
6. El compañero practica fútbol.
Verb: Practicar
Conjugation: Practica (Matching the third-person singular - Male)
7. Ana y Susana participan en la clase de ciencias.
Verb: Participar
Conjugation: Participan (Matching the third-person plural)
8. Ustedes hablan con mi amiga Elena.
Verb: Hablar
Conjugation: Hablan (Matching the second-person plural)
9. Alejandro estudia para el examen.
Verb: Estudiar
Conjugation: Estudia (Matching the third-person singular - Male)
10. Patricia y yo escuchamos a la maestra de inglés.
Verb: Escuchar
Conjugation: Escuchamos (Matching the first-person plural)
