Can someone please help answer these for me with passive form of the verbs (agent omitted)

animal farm, written by george orwell, is a representation of russia after the revolution that led stalin to take over power.

in this excerpt, the central idea seems to be that the animals (a representation of society), when they believe to be working for a greater good and equality, are obedient and productive. they were convinced that, after expelling the owner (jones) from the farm, they would live in harmony and be fairly treated.

as we know, the pigs become the leaders and grow more selfish and dictatorial with time. in the end, they look and act in a way so similar to humans that it is impossible to tell the difference. the ideals of equality are shattered, and the farm turns out to be worse than it was before. the animals are manipulated with false propaganda and forced to work in order to enrich the pigs.

martians or other types of aliens represent a unique fear as opposed to zombies. vampires and other types of monsters.   in most sci-fi stories, aliens come from other worlds and have different or more advanced technology.   abductions and experimentation on human bodies that involve these technologies, or the use of these technologies against human beings and the use of unknown "powers", are a type of fear that's different from that of other types of monsters.  

although there are different versions for the fairy tale little red riding hood,   as the one from grimm brothers and perrault, all of the versions show the huntsman as a man who is in perfect harmony with nature. the statement that best describe him, the huntsman, is that he is a true hero who inspires those around him due to his words and actions. the way he acts show internal reflections that are an example to follow by anybody who takes the time to analysing them. he shows altruism actions when he aside puts his job just to check the grandmother is well, by doing this he could notice at an early stage what has happened and could save her.