Answer: 1. caminando en el bosque, 2. voy a descansar
Explanation:
1. The verb needs to become a present participle since it is using estar.
2. The statement says, "I am walking in the forest," so the most reasonable answer would be, "Tomorrow, I am going to rest."
-ar verbs: -er verbs
I - aba - ía
you - abas - ías
he/she - aba - ía
we - ábamos - íamos
you (plural) - abais - íais
they - aban - ían