за 30 минут . (Если не знайте не отвечайте)Главное было правильно. ДОЮ

2) You must be in the cinema before the film starts

3) You should leave the football stadium before the match will start

4)You ought to come to a library before someone won’t take a book, that need you

5) You have to arrive 15 minutes before a museum will open

6)You should be in a swimming pool before people will come

Объяснение: