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


Problem: It is not easy to space buttonholes exactly the same distance apart, and it is very difficult to cut them precisely the right size . The tiniest slip of the scissors will make the hole too large, and even one thread uncut will leave *it* too small.

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

Answer: no


Problem: When Tommy dropped his ice cream, Timmy giggled, so father gave *him* a stern look.

Do "him" and "Timmy" mean the same thing?

Answer:
yes