Контрольные задания > A. Choose the correct word or phrase. 8. Your essays must be / have handed in on Friday morning.
Вопрос:
A. Choose the correct word or phrase. 8. Your essays must be / have handed in on Friday morning.
Ответ:
The correct answer is 'must be'.
Explanation: We use 'must be' to show obligation in the passive voice, meaning that the essays need to be 'handed in' by someone, so it's an action done to the essays.