Answer:
It depends on your action but i would say, Irnos, Salir, Comer, Correr, Caminar.
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Ellos están pensando en una solución.
(A) would be the correct answer im fluent in spanish so i hope i could help in any form or way , goodluck by the way ;D
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The 3rd one is the one that is correct
No sé bien a<span> qué te</span><span> re</span>fieres<span>.</span>
