8вопросов к топику про деньги. ток не легкие какие-нибудь, а посложнее. типа past perfect или present perfect

Have you ever earned money?
What was used instead of money many years ago?
What have coins been made of?
Does money influence our life?
How do you understand the proverb "Money can't buy happiness"?
Why do people need money?
Has money created discrimination between the poor and the rich?
What are the pros and cons to giving pocket money to children?