Final answer:
The correct forms of -er and -ir verbs are provided in the sentences.
Step-by-step explanation:
For the given sentences, the correct forms of -er and -ir verbs are:
- Mis abuelos descansan mucho.
- Mi tía está en su cuarto.
- Mi abuelo vive en su casa.
In the first sentence, the verb 'descansar' ('to rest') is conjugated as 'descansan' to agree with the subject 'mis abuelos' ('my grandparents'). In the second sentence, the verb 'estar' ('to be') is conjugated as 'está' to agree with the subject 'mi tía' ('my aunt'). In the third sentence, the verb 'vivir' ('to live') is conjugated as 'vive' to agree with the subject 'mi abuelo' ('my grandfather').
Learn more about Conjugating -er and -ir verbs in Spanish