Решение #
Student 3:... she would not have been late for class... (она бы не опоздала на урок).
Student 4:... If she had not been late for class.... (Если бы она не опоздала на урок).
Student 5:... her teacher would not have gotten angry with her and sent her to the principal's office... (ее учитель не стал бы злиться на нее и не отправил бы ее в кабинет ректора).
Student 6:... If she had not been sent to the principal's office,... (Если бы ее не отправили в кабинет ректора).
Student 7:... she would have attended music class... (она бы посетила класс музыки).
Student 8:... If she had attended music class,... (если бы она посетила класс музыки).
Student 9:... she could have entered the music contest... (она могла бы попасть на музыкальный концерт).
Student 10:...If she had entered the music contest... (если бы она попала на музыкальный концерт).
Student 11:... she might have won. (она могла бы выиграть).