"The student had finished."
Translation:Ο μαθητής είχε τελειώσει.
student = μαθητής/σπουδαστής/φοιτητής, πχ. (college) student is not μαθητής but σπουδαστής or φοιτητής. If we want to refer to "μαθητής" specifically we need to say "pupil" in English. I think DL should accept all three options (μαθητής/σπουδαστής/φοιτητής) as an answer.