Final answer:
The sentence "No hables con la boca llena." is grammatically correct.
Step-by-step explanation:
The sentence "No hables con la boca llena." is grammatically correct.
This sentence means "Don't talk with your mouth full." and it is a common expression used in Spanish to remind someone not to speak while eating or with food in their mouth.
The subject of this question is Spanish as it involves understanding a phrase in the Spanish language.
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