C - went and watched that part on Disney+ to make sure
The words that best completes the sentence is
"Mr Bello is the teacher. I am his student"
The article "the" is used to show a definite word, that is to say that Mr Bello is definitely the teacher.
The possessive pronoun "his" is used to show ownership.
What this means is that it shows <em>without any iota of doubt</em> that the narrator is the student of Mr Bello
Therefore, the best words that complete the sentence are "the" and "his"
Read more here:
brainly.com/question/5635312
The answers are
D, B, and D