???

Is the word in sentence #3 that has six hidden letters "always"?
 
Indeed it is!
 
#3: For every word you can figure out, I will change a few of the same letters in that word ***o****** **** *e****e. The letter "E" will always be present.
#4: You may NOT ask what this is or *** ******* **e*****. ***** ** **** ****e * re*e*.
 
The letter "E" will always be "present"?
 
Right on!
 
#2. You don't have to *e**o** like that ?
 
Close, quite close.
 
#2: You don't have to *e**o** like this, but you can if you want to.
#3: For every word you can figure out, I will change a few of the same letters in that word throughout this *e****e. The letter "E" will always be present.
#4: You may NOT ask what this is or *** s**i*** **e*****. ***** ** **** ****e a re*e*.
 
Righto!