1.) I will help my sibling do his mathematical problems as a sign of generosity. I think that it is considered as a good deed for me to do so I will help my sibling.
2.) To be a helpful human being, I will just stay at home so the covid cases will not increase. To be cleared, I will stay at home so I will not bring the virus at other people, that way I can be helpful or helping to lessen the spread of the virus.
3.) I will help them if I can be.
(Those are my answer:) Hope to help you! It is actually base on what you thought but here is mine!)