1. It flows from history, I think. During World War II America and Russia were allies. So the newspapers reported that Russians are hardworking, radical because of the political system and brave because of the way they protected their country. But things had changed by the end of the war. The USA and the USSR had varied in their opinions, and then propaganda stepped in.
2. Personally I disagree with this statement because there are lots of ambitious people here who are willing to get to new tops in different spheres. I don't think that it is changing because everybody here wants to live comfortably.
3. I think it depends on the person. It's not some kind of national feature but the personal choice.
4. I am concerned that it can be really exhausting because it's just too much. There are some personal problems which mustn't be shared due to their moral load.
5. I think that equality is important everywhere in the world and it's the ideal of absolute majority of people. But nowadays we live in capitalistic reality so the principle of equality takes a back seat somehow.
are given
Объяснение: множественное число, временные формы глагола