Tufguy, please review each post you write. Look for the word
that and the phrase
that person. If you see that you've used them, review what your teachers and volunteers here have told you about them. You will usually be able to replace them with more natural words that consume less of the world's finite supply of syllables.
Please don't take this to mean that you can never use the word
that, which is essential, or even the phrase
that person, which might possibly be appropriate somewhere. Hmm, on second thought, you have already exhausted your lifetime supply of the phrase
that person. You don't need to write it ever again.