Смотреть решения всех заданий с фото
Вопрос:

17. You ___ be quiet in the classroom.

Ответ:

The correct answer is **B. must**. **Explanation:** 'Must' is used to express obligation. It's a rule for students to be quiet in a classroom, which means 'must' is a proper verb here, as 'mustn't' expresses prohibition and 'always' does not fit.

Похожие