Problem: I sallied out for a bit of food , more to pass the time than because I wanted *it* .

Do "it" and "time" mean the same thing?

Answer: no


Problem: I poured water from the bottle into the cup until *it* was empty.

Do "it" and "the cup" mean the same thing?

Answer: no


Problem: The mothers of Arthur and Celeste have come to the town to fetch them. They are very happy to have *them* back, but they scold them just the same because they ran away.

Do "them" and "mothers" mean the same thing?

Answer:
no