Problem: My meeting started at 4:00 and I needed to catch the train at 4:30, so there wasn't much time. Luckily, *it* was short, so it worked out.

Are "it" and "the train" the same?
Answer: no

Problem: The dog chased the cat , which ran up a tree. *It* waited at the bottom.

Are "It" and "the cat" the same?
Answer: no

Problem: Susan knows all about Ann 's personal problems because *she* is indiscreet.

Are "she" and "Susan" the same?
Answer: no

Problem: The woman held the girl against *her* will.

Are "her" and "the girl" the same?
Answer:
yes