and so on:
at school i study maths, english, darija and so on.
or else:
come early, or else you won’t get anything to eat.
whoever:
whoever says that is a liar.
whatever:
eat whatever you like.
whenever:
you may call me whenever you want.
wherever:
we were warmly welcomed wherever we went.
whichever:
read whichever poem you find most interesting.