Choose the right variant. 1. There's someone at the door. It
can/must be the postman.
2. Don't worry, you don't have /
mustn't pay now.
3. I think you had better / would
better take a pullover with you.
4. Jones could / must be
president if Smith has to resign.
5. Sorry. I can't stay any longer. I
have to / might go.
6. It was 5 o'clock an hour ago.
Your watch can't / mustn't be
right.
7. It's a school rule. all the pupils
have to / must wear a uniform.
8. I suppose that out team must/
should win, but I'm not sure.
9. Let's tell Diana. She could /
might not know.
10. In my opinion, the
government, might / should do
something
about this.

1. There isn't anybody in the cabin.
Is there anybody in the cabin?
2. Our ship didn't arrive two days ago.
Did our ship arrive two days ago?
3. We won't have made up all the ship's papers before the arrival.
Will we have made up all the ship's papers before the arrival?
4. The cargo wasn't loaded on deck.
Was the cargo loaded on deck?
5. The radio-operator hasn't sent a radiogram yet.
Has the radio-operator just sent a radiogram?
6. He can't speak English.
Can he speak English?
7. We hadn't unloaded the cargo by Friday.
Had we  unloaded the cargo by Friday?
8. My chief mate isn't keeping watch now.
 Is my chief mate keeping watch now?
9. I won't be working all day tomorrow.
Will you be working all day tomorrow?
10. The ship's hull won't be repaired in a dry dock.
Will the ship's hull be repaired in a dry dock?

1. The ship has two refrigerated holds.
2. The sailors are (were) on deck. (Время непонятно: Моряки сейчас на палубе – are; Моряки были на палубе – were)
3. We usually take some cargo in that port.
4. The telephone is ringing. Please, take up the receiver.
5. We had good weather last week.
6. The ship will go to her port of registry in two days.
7. The dockers were discharging the cargo at that time yesterday.
8. We will change our course because there is danger ahead. (Здесь точно there is, а не there was? Тогда было бы: We had changed our course because there was danger ahead)
9. All the papers have been signed by the port authorities.
10. By that time tomorrow we will (shall) have repaired our engine.