Помогите пожалуйста решить.

Aleks в категроии Английский язык, вопрос открыт 27.05.2018 в 20:53

1) Ann may/has to leave school early tomorrow. She has a dentist appointment after school.
2) If Ben gets permission from his parents, he may/ must study in France next year.
3) Kate should have/ must have studied a lot for the history exam. He got very high mark.
4) Students mustn’t/ needn’t run in the school corridors. It’s against the rules.
5) You can/must raise your hand and wait before you ask a question.