Substitude Teachers

Everybody likes substitudes, because they will not stay so long or becausen some don't give you homework. But you need to know the kind of subs that there is, like:
The ones who is just for the day: that don't give you much homework and you can talk more.Also because is kind of easy to work with. ^-^
The ones who stay to a unknown time: with them, you actually have to work more and some can be a little mean. They give you homework that you HAVE to do.
In either way, some subtitudes are cool and is fun be with them...until the real teacher comes back...of course.