Задание 1. Выберите правильный модальный глагол.
1. Last year our farm... buy new machines.
a) should b) may c) can d) had to
2. Tractors will … be equipped with an oil filter.
a) can b) have to c) must d) may
3. The soil for planting potatoes ... be manured very thoroughly.
a) should b) have c) ought d) are able
4. Maintenance operations … to be carried out on a continuous basis.
a) have b) must c) should
5) It is important to manage machine properly. You plan the use of machinery.
a) should b) may c) ought d) can
6) You will … get a high yield of crops in a few months.
a) can b) have c) be able to d) ought to
7) The effects of friction be serious.
a) should b) can c) have to

Last Saturday a scientist from Kazakhstan in his interview for The National Geographic Channel  spoke about the environmental disaster of Kazakhstan and the whole world. The Aral Sea was once a busy place that gave gave a lot of fish and employment to the people of that area. The shrinking of the Aral Sea began when people started using the water of the Amu Darya and the Syr Darya rivers for agriculture. The government tried to save the Aral Sea by building a dam but only a small part of the sea was saved. The eastern basin of the sea has   turned into a desert. We should always remember what is done cannot be undone. ​

Объяснение:

1) I really admire Jane. She could research two children when her husband has died.

2)Ann has worked as a freelancer every day this month, as its the busiest time in her company.

3)John has to wear a uniform, there are strict rules in his school.

4)Tony loves working as a salary because he doesn't have to spend 8 hours in the office.

5) The children returned home safe and overtime after a search team found them in a forest.

6) Marie Curie was the first woman who won the Nobel prize.

7)Bob hated working in the bank and he researchs  to the conclusin that a desk work didn't work for him.

8)Alex had a rough tutor to meet so hes been working during the weekend.

9) We shall go to Moscow when my father gets his salary.

10) Petes got lessons with a tutor after school because he wants to catch up  his classmates in Physics.

Объяснение: