Помогите пожалуйстааа :3

Вставьте must, should/ have to или be to в нужной форме.

1. The building firm … finish the construction of the new plant this year.
2. There are no parking facilities for manufactured cars, so the company … buy some land.
3. The workers … produce the first 100 cars by the end of the year.
4. African countries … buy a large part of machinery and equipment for their plants from developed countries.
5. The engineers … follow the instructions how to use new equipment.
6. Last year the local government … (not) spend much on transport facilities as they were well maintained.
7. Companies trading in the world market … ensure high standards.
8. When most countries of Central Europe exhausted their coal resources they … import large quantities of gas and oil from abroad.
9. The government … spend more money to improve sports facilities in the country in order to involve more children in sports.
10 Such large countries as the USA and Canada … (not) import wheat because they produce this crop on large areas in their countries.