Question:
Joe tried to get Tom to wake up, but he couldn't.

he
Answer:
Joe
Question:
The United States sanctions Iran since they recently were caught in plotting an assassination.

they
Answer:
Iran
Question:
The kids asked their neighbors if they could have candy on Halloween.

they
Answer:
The kids
Question:
The preservation society managed to rescue a rare species of birds since they have the funding and resources to dedicate to saving animals.

they
Answer:

The preservation society