The word "said" is a dialog tag. There are thousands of words you can use to substitute. A few are:
There are lists all over the internet and hardcopy publications with alternatives. One good internet site is below:
http://ajbarnett.hubpages.com/hub/400-Alternative-words-for-said
Another word for said is stated.
One alternative word that can be used instead of "they" is "them."
There are a couple hundred words that can be used instead of the word said. Some examples are, replied, says, cried, shouted, and answered,
An alternative word that can be used instead of "we" in an essay is "one" or "individuals."
instead of being that
How come is often used instead of why.
used to be
no "It" is not used instead of he and she...
But may be used - instead of however, in most contexts.
A word used in an informal manner "The precedent said, 'What's up hommie' (to borrow the colloquialism)."
pronoun
unserrated