Question:
Randy went to Nick's store, and bought his groceries.

Who is his referring to in this sentence?
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Answer:
Randy


Question:
Sarah tried to ignore the elephant in the room, but she would not stop trumpeting.

Who is she referring to in this sentence?
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Answer:
the elephant in the room


Question:
The knife cut through the fence because it was sharp.

Who is it referring to in this sentence?
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Answer:
The knife


Question:
Jack pushed Tim down the stairs and he slipped to the ground.

Who is he referring to in this sentence?
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Answer:

Tim