Answer:
Ils sont verts.
Moi, je ne joue jamais au basket.
Step-by-step explanation:
The subject in the first sentence is LES YEUX; it is not Marie, since we can totally disregard that piece of information.
Yeux is masculin pluriel, thefore replacing them into pronoms ILS.
Jamais should ALWAYS have a "NE ___ JAMAIS" accompanied with it.
It is JE, the subject, since we can take AU BASKET out of the sentence and still make sense. JOUER is an "ER" verb, so applying the conjugaison for JE (1ere personne, singulier), you'd only need to take ER from jouer, and add E.