The dog of Brett's behavior was a lot worse than that of Leslie's, because 
OPTIONS:
- Brett dog was obedient.
- Leslie dog was obedient.
Leslie dog was obedient.

Robert smokes and Leslie doesn't smoke so 
OPTIONS:
- Robert bought a cigar at the cigar shop yesterday.
- Leslie bought a cigar at the cigar shop yesterday.
Robert bought a cigar at the cigar shop yesterday.

We had to remove the bureau and replace it with a dresser, as the 
OPTIONS:
- bureau was an appropriate fit for the room now.
- dresser was an appropriate fit for the room now.
dresser was an appropriate fit for the room now.