Определите в предложениях видовременные формы глаголов и укажите их инфинитив. in 1980 the best sportsman from five continents met in moscow. practical work is an essential part of university education. last year my friend headed the research work at the institute. a group of foreign students will arrive at our city in five days. the first electronic machines appeared in 1945 in america. we are prevent and detect crime.

In 1980 the best sportsman from five continents met (Past Simple Active, to meet) in Moscow.
Practical work is an essential part (Present Simple Active, to be) of University education.
Last year my friend headed (Past SimpleActive, to head) the research work at the Institute.
A group of foreign students will arrive (Future Simple Active, to arrive) at our city in five days.
The first electronic machines appeared (Past Simple Active, to appear) in 1945 in America.
We prevent and detect crime. (Present Simple Active, to prevent, to detect) 

I really like horses. I'm a member of a team "(ваше название") and because of this I know many things about this animal. They're very clever and feel you.  The horses are usually kind. They eat apples and sometimes I feed them. The horses can do many things for people. For example, you can ride by them. The horses are wonderful animals and they understand what you thing about them. 

Я очень люблю лошадей. Я член команды (название) и поэтому знаю много вещей об этом животном. Они очень умные и чувствуют тебя. Лошади по-настоящему добрые. Они едят яблоки, и иногда я кормлю их. Лошади могут людям. Например, Вы можете на них ездить. Лошади прекрасные животные, и они понимают твое отношение к ним.
прощения, если съедут абзацы и прощения, если припоздала:)

 1)      Everyone in our world has his favorite hobby.

2)      It can be, for example: painting, dancing, computer games and so on.

3)      Now I would like to tell you about my hobby – I prefer to collect coins.

4)      One can say that it is not an interesting or fascinating hobby but I do not think so.

5)      It is such a pleasure to be busy with my collection for hours!

6)      I sort coins out, clean them, lay them into albums and admire the result of my actions.

7)      There are different coins in my collection.

8)      One can find foreign currency, anniversary editions of coins, and even some coins with mistakes (they are the most valuable) in my albums.

9)      Looking at coins one can see historical changes in life of a nation: meaningful dates, people and events that left their mark in the history.

10)   I think it is more than astonishing to hold a part of the history in your arms.