这几条口语试题，该怎么答才好？？？

1.I don't think that animals should be trained to amuse human beings, because animals are our friends. Is there anybody will train their friend to amuse themselves?Of course not. Animals also have minds,feeling just like human beings, so I hope that everyone would treat animals really their friend but not by mouth.
2.No one can change another one's mind until he/she really want to change, so the best way to help people make change in their lives is to help change their mind.
3.This sentence is too abolute.A person's fate is determined by many factors, the personality is one of them. We can say that a person who with good personality will be easier to succeed, but it's completely not the only factor. You need talent,braveness,confidence,luck,opportunity and so on.Obviously,a peroson's success is very complex, and this sentence is wrong because of its one-sided.
4.There are many factors will cause the aggressive acts in human beings. People fight sometimes result from impulsion and sometimes result from stupid. Someone ever said the tragedy in the world always connects with money, I want to say so dose this. No matter what the external factor is, the internal facor is incongruent interests.So incongruent interests cause the aggressive acts.