She harder if she wants to pass the exam. a) must. b) have to. c) might

She willstudy harder if she wants to pass the exam. A) must. B) have to. C) might

She will have to study harder if she wants to pass the exam - Ей придется упорно (усердно) заниматься, если она хочет сдать экзамен.

 have to - эквивалент модального глагола must