30. Перепиши предложения в времени.
1. It is ten o'clock. I must go.
2. Nina is ill. She must go re bed.
3. We can't wait for George any longer. We must call him.
4. I must ask mother in case I want to go to the park.
5. You must not do all the work yourself.
6. Must you help your brother?
7. Stacy must write the composition by Monday.
8. You must not open the boxes.
9. They must be very careful.
10. I must meet my friend at the station.

1. It was ten o'clock. I had to go.

2. Nina was ill. She had to go to bed.

3. We couldn't wait for George any longer. We had to call him.

4. I had to ask mother in case I wanted to go to the park.

5. You did not have to do all the work yourself.

6. Did you have to help your brother?

7. Stacy had to write the composition by Monday.

8. You did not have to open the boxes.

9. They had to be very careful.

10. I had to meet my friend at the station.

Объяснение: