Question:
Iphones are selling more than androids because they are trendy.

they
Answer:
Iphones
Question:
The carpenters came before the painters since they need to paint after the furniture has already been built.

they
Answer:
the painters
Question:
The bartenders threw ice at the Jersey Shore cast because they were not wanted in the club.

they
Answer:
the Jersey Shore cast
Question:
Jeremy annoyed Justin so he can leave the room.

he
Answer:
Justin