Answer:
1.To conjugate these verbs in the Spanish present tense, you take the root (also called the stem) of the word and add the correct ending, depending on the person (yo, tú, él, nosotros, etc.) and the type of verb in front of us (-ar/-er/-ir). The type of verb (-ar/-er/-ir) determines the ending.
2.The present tense endings for regular -er verbs are: -o, -es, -e, -emos, -éis, -en. You usually don't need to give a pronoun in Spanish as the ending of the verb makes it clear who or what is doing the action.
3.Ar- Ayudar
Er- aprender
Ir-Abrir
