Подчеркните в следующих предложениях модальный глагол или его эквивалент. 1. we can normally guarantee to accommodate all new students in a hall of residence. 2. choosing a career may be a complex task. 3. applicants should have relevant professional experience. 4. the projects are to be submitted by may 31. 5. you have to learn a lot of dates when you study history.