To complete the sentence with the correct Spanish word, we need to consider the context given. The sentence is "Yo ___ libros," which translates to "I ___ books" in English.
The most suitable word to fill in the blank is "leo." "Leo" in Spanish means "I read." So, the complete sentence would be "Yo leo libros," which translates to "I read books."
Therefore, the correct Spanish word that best completes the sentence is "leo."
