А)
I support my parents in paying taxes
I try to prevent commit offences like vandalism, etc. by calling police
I behave polite with people, so I help them to keep their mood cheerful
I don't do any bad things, so this way I help people to live calmly.
Б)
I must not feed homless pets, but I do this
I am not supposed to help people with their homework, but I do this
I must not extand this list up to thousand things, but I do want to do this.