С get
For example get off leave off pet on. Etc

1. If there are a few firms in an industry, the change in the behaviour of one firm can influence other firms.
2. Can developing countries enter the European Union? -No, they can't.
3. The firm may increase its profits by means of new materials or technologies.
4. Any crisis in the economy of the USA can seriously influence the economies of other nations.
5. Any country must follow some rules in international trade.
6. Can Russia supply its population with necessary amounts of gas and petrol?- Yes, it can.
7.British farmers could not ensure the required quality of meat when there was an infection among animals a few years ago.
8.You must have a special licence to import or export exotic animals.

1 ты не должен гулять поздно ночью. по городу один
2 книги должны быть возвращены в библиотеку вовремя

3 я не могу встретить их на станции , я должна работать

4 его машина сломалась и поэтому он должен отправится на работу автобусом

5 ты не должен это делать если не хочешь

1)she looked pale. she  must spend more time out in the open air.2)my parents won't at home and i must look after my sister.3)they must call the doctor because granny was ill.4)pete must stay at home because it was very cold.
1 can

2 may

3must

4may

5 can't

1)need2)shold3)could4)can5)may

разделительные вопросы не знаю