Twice as old as" means we will be multiplying by 2. "her cousin" - we need a new variable C to represent her cousin's age. "was three years ago" - 3 years ago means we will have to subtract 3.
You will receive a penalty of some sort.
D, three to five times a week.
To demonstrate responsibility, the character must show initiative to do things that aren't necessarily just for fun or for your own benefit, such as helping a charity or cleaning a the house. The character will be able to look after others and show real selflessness.
I think that it is Lung cancer that is mainly caused by tobacco