Final answer:
The correct command form to complete the sentence is '¡No pongas'
Step-by-step explanation:
The correct command form to complete the sentence is: ¡No pongas las servilletas aquí!
The verb 'pongas' is in the subjunctive mood and matches the subject 'tú' (you). The verb 'debere' is also conjugated to 'debes' to match the subject 'tú' as well. In Spanish, the verb forms are influenced by the subject, and different verb forms are used for different subjects and contexts.
Learn more about Spanish verb conjugation