Question:
The fish ate the worm . *It* was hungry.
The fish
It
-----
Answer:
yes

Question:
I took the water bottle out of the backpack so that *it* would be handy.
the backpack
it
-----
Answer:
no

Question:
The sack of potatoes had been placed above the bag of flour , so *it* had to be moved first.
the bag of flour
it
-----
Answer:
no

Question:
When Tatyana reached the cabin, her mother was sleeping. She was careful not to disturb her, undressing and climbing back into *her* berth.
mother
her
-----
Answer:
no