1)do you usually help other people?
yes, i like to help others, it's a nice and useful thing for me.
2)what do you usually do to help other people?
i wonder if it is needed and after i answer i will help.
3)how often do you help other people?
i often help people is interesting what they will offer you in return. but i usually do not get anything
4)who do you usually help?
i often help older people or my grandparents / parents who need it.
5)why do you think you should help other people?
i think helping people is a good thing, people will be grateful for the heroic fact you have done.