Здравствуйте. Прошу проверить упражнение
Подчеркните в каждом предложении модальный глагол или его эквивалент.
1. To become a student of the university you are to pass difficult entrance examinations.
2. A tutor has to help his students to plan their work.
3. If the student fails in an examination, he is allowed to take it again.
4. Students must take examinations at the end of each term.
1) are to
2) has to
3) allowed to
3.is allowed to