Final answer:
The correct verb form to complete the sentence is 'recomienda'.
Step-by-step explanation:
The verb form that correctly completes the sentence 'El blog de viaje nos ____ que llevemos ropa de verano' is 'recomienda'. This is the correct form of the verb 'recomendar' (to recommend) that agrees with the subject 'el blog de viaje' (the travel blog) in third person singular.
Learn more about Spanish verb forms