Помогите пожалуйстааа :3Вставьте must, should/ have to либо be to в

Помогите пожалуйстааа :3

Воткните must, should/ have to либо be to в подходящей 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.