The word that best completes the answer is casa.
Answer:
1. Ar
2. Er
3. Ir
4. Ar
5. Ar
6. Er
7. Ar
8. Ar
9. Ar
Explanation:
I just looked at the end of the verb to find out what of the 3 type they are.
Cuando estoy en la cocina, me lavo las manos en el fregadero.
Cuando means When
estoy en means I am in
la cocina means the kitchen
me lavo means I wash
las manos means the hands/my hands
en means in
Meaning: When I am in the kitchen, I was my hands in the sink.
I hope this helped - Maria S.