IN: Which person is they?
Marriott rewards frequent travelers with points for free stays, but they are also enticed by other reward programs from other hotels.
OUT: frequent travelers

IN: Which person is they?
The Mavericks are able to sell much merchandise to fans this season, and they just want it since they are the hottest team at the moment.
OUT: fans

IN: Which person is he?
A biker sped past an officer and he turned on his siren.
OUT: an officer

IN: Which person is he?
Liu Kang threw the bags of Johnny Cage into the water since he mistakenly asked him to carry his bags.
OUT:
Johnny Cage