Yes, the sentence would be right
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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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Answer: Ar verbs
Explanation:
because of Spanish and others
You probably need to conjugate 'esquiar' to ustedes form but that depends on the form you guys are in like: Present or Past Pogressive, Preterite...etc.
