Zero/First Conditionals
What do you DO if (when) the shop assistant gives you the wrong change.
I ask her/him to check it and return my change correctly.
What do you DO if (when) you forget you shopping list at home (and don't remember what to buy)?
I try to buy only the common grocery items that I remember I have to buy.
What do you DO if (when) your boss asks you to work overtime?
I only accept if they pay me the extra for the time.