First, let's see what person and tense is needed:
mis hermanos y yo - my brothers and I - this is equal to "we"; first person plural.
Ayer means "yesterday" - so we need the simple past tense.
Simple past tense of regural -ar verbs is -amos, just like the present tense!
So the correct answer is "guardamos".
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Answer:
1. estoy
2. not sure but voy or vas
Explanation:
Ella llama a sus abuelos
i am not sure if it includes an inderect object pronoun but i know that's how you would simply say it