Ответить на вопросы с помощью модального глагола did you have to stay long at college? how long did you have to stay? how many years will you have to study before you leave college? how many exams will you have to take at the end of the college year? What subjects will you have to study next year? Срочно пожалуйста

I  didnt have to stay for long. I had to stay for (2) years. I ll have to study for (3) years. Ill take (4) exams. Ill study ( Maths, Russian, English...).