Http://stevenmedia.tv/watch/JjjzfmHB14WdRN5 http://stevenmedia.tv/watch/jQwFdY9PNOGEFN9

Поставь глаголы в правильное время:

1. Nick is tired because he (has been watching) videos since two o’clock.

2. He often (visits) his friends.

3. This morning Kate (helped) the old woman to cross the road.

4. What are you doing now? I (am watching) a film.

5. Helen (has been doing) the shopping for an hour.

6. They (got) to the University by metro.

7. Tom (gets) good marks at school.

8. At this moment Bill and his granddad (are fishing) in the lake.

9. I sometimes (stay) at work till seven.

10. Ally has just watered flowers.

Colonisation of the Moon or other planets in the Solar system might be necessary one day.  People over-use natural resources and sooner or later there will be no gas, oil or coal,  Air and water will be so polluted that people will have to look for homes on other planets.  It wouldn't be desirable but quite possible.  The problem is that the humanity has no technology to travel to other planets and to remain there for ever.  Governments prefer to spend money on weapons instead of inventing technologies to save our planet.  I personally believe that moving to other planets might be a disaster for the people.  They wouldn't be able to survive there.  Sadly enough, there are no suitable planets in the Solar system where we could settle. I wouldn't like to live in the metal box on some dead planet all my life.  Though if we go on the way we do now, Earth will also become a dead planet.