Must, Mustn 't, Needn 't

1. All shareholders must receive an invitation to the AGM; however, they needn't attend.
2. We sent out the invitations a week ago; they must have arrived by now.
3. The regulations are quite clear; we must accept a proposal with an absolute majority; we mustn't reject a proposal without presenting it to the meeting.
4. All invoices must be paid not later than 30 days from the date of issue.
5. The suggestion from the quality circle is unrealistic; however, we mustn't reject it without discussing it with them.
6. We can look at this matter at our next meeting. It isn't urgent; we needn't discuss it today.
7. These figures can't be right. There must be a mistake somewhere.
8. He must have made a decision yesterday.
9. In the now flexible system, employees mustn't take less than half an hour for lunch.
10. We needn't finish this meeting before 12 o'clock.
11. We didn't need to replace this piece of equipment.
12. John must have been out of town for the 4 of July.
13. It must have rained last night.

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Ключ

1. Они, должно быть, уехали в Нью-Йорк.
2. Они, возможно, уехали в Нью-Йорк.
3. Может быть, они и уехали в Нью-Йорк (хотя едва ли).
4. Не может быть, что они уехали в Нью-Йорк.
5. Им следовало уехать в Нью-Йорк (а они не уехали).
6. Им не следовало уезжать в Нью-Йорк (а они уехали).
7. Они могли и не уезжать в Нью-Йорк (а они уехали).
8. Им незачем было уезжать в Нью-Йорк (они и не уехали).
9. Им пришлось уехать в Нью-Йорк.
10. Им предстояло уехать в Нью-Йорк.