Final answer:
The missing word in the sentence is 'falta'. It means 'lack' or 'I am missing' in Spanish.
Step-by-step explanation:
The missing word in the sentence is 'falta'. The sentence should read: 'No me falta nada. Tengo todo.'
'Falta' means 'lack' or 'I am missing' in Spanish. So the sentence translates to 'I am not lacking anything. I have everything.'
'Falta' is used here to describe a lack or absence of something. In this context, it means that the speaker has everything they need and doesn't need anything more.
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