45. Fear of public speaking is a very common __________. It causes many students to avoid situations in which they are called upon to say something or express their ideas to their classmates. Teachers can teach their students some simple and effective strategies __________ their nervousness and stress, and give positive encouragement to their students when they speak in public. (A) acrophobia; for winning (B) aphasia; for enlarging (C) phobia; for overcoming (D) depression; for developing