Final answer:
The correct word to complete the sentence is 'voy.' It is the first person singular form of the verb 'ir' (to go) in Spanish.
Step-by-step explanation:
The correct word to complete the sentence is voy.
The sentence translates to 'I don't want to go to school today.'
'Voy' is the first person singular form of the verb 'ir' (to go) in Spanish, which matches the subject 'yo' (I) in the sentence.
Learn more about Completing the sentence in Spanish